CN106411278B - Holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction arithmetic unit - Google Patents
Holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction arithmetic unit Download PDFInfo
- Publication number
- CN106411278B CN106411278B CN201610831198.7A CN201610831198A CN106411278B CN 106411278 B CN106411278 B CN 106411278B CN 201610831198 A CN201610831198 A CN 201610831198A CN 106411278 B CN106411278 B CN 106411278B
- Authority
- CN
- China
- Prior art keywords
- signal
- common
- output end
- input terminal
- operational amplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
Abstract
The present invention relates to a kind of holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction arithmetic units, especially symmetrical configuration and common mode difference mode signal separator and multi input addition and subtraction arithmetic unit with the output of mutual symmetry difference mode signal, belong to electronic circuit, analog signal arithmetic processing circuit, analog signal transmission circuit.Holohedral symmetry common mode difference mode signal separator is made of two Signal averaging amplifiers and a common-mode signal estimation circuit, and two Signal averaging amplifiers are all made of add circuit or subtraction circuit；Common-mode signal estimation circuit is mainly made of average voltage circuit and high gain operational amplifier, common-mode signal estimation circuit and Signal averaging amplifier constitute closed loop and form negative-feedback, two differential mode output signal mutual symmetries of holohedral symmetry common mode difference mode signal separator.Multi input addition and subtraction arithmetic unit has two groups of natural sign input terminals, an auxiliary signal input terminal, two difference mode signal output ends and a common-mode signal output end, has the function of flexile signed magnitude arithmetic(al).
Description
Technical field
The present invention relates to a kind of holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction arithmetic units, especially tie
Signed magnitude arithmetic(al) structure symmetrical and common mode difference mode signal separator with the output of mutual symmetry difference mode signal and there is multi input
Device belongs to electronic circuit, analog signal arithmetic processing circuit, analog signal transmission circuit.
Background technique
In the operation and processing of electric signal, the calculation process of analog signal is very important.And it is transported in analog signal
In calculation processing, the operation of common-mode signal and difference mode signal is critically important analog signal calculation function.
Especially in the differential transfer mode of analog signal, input terminal conversion needs to use the output of signal mutual symmetry
Amplifier, output end conversion needs to use the difference mode signal amplifier for eliminating common-mode signal, but this class A amplifier A is more multiple at present
The miscellaneous application for leading to analog signals difference transmission technology is restricted.When input terminal conversion is led to output end conversion using identical
When with circuit, it is necessary to use common-mode signal and difference mode signal split circuit.
In analog signal processing system, the separation operation of common-mode signal contained by two natural signs and difference mode signal is
Necessary, this is also required to use common mode difference mode signal split circuit, to realize the measuring and calculating of difference mode signal and common-mode signal, but at present
Common mode differential mode splitter circuit structure is complex, it is also more difficult to realize high-purity separation.
In addition, multi input plus-minus accurate operational be also it is critically important, this basic computing circuit is very widely used,
Two input terminals of currently used subtraction circuit usually have different input resistances and different input characteristics, lead to two signals not
Symmetrically, to influence operational precision, and addition and subtraction is realized simultaneously and two symmetrical circuits of input terminal input characteristics are very multiple
It is miscellaneous, to limit circuit application range.
Summary of the invention
The technical problems to be solved by the present invention are:
1, has the electricity that there are two natural signs to input, two mutual symmetry difference mode signals export and a common-mode signal exports
Road；
2, there is symmetrical configuration and simple, parameter designing be easy, common mode differential mode splitter circuit easy to use；
3, with symmetrical configuration and simple, multi-input operational, using flexible multi input addition and subtraction arithmetic unit circuit.
The present invention provides a kind of holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction arithmetic units.
The technical problem to be solved by the present invention is to what is be achieved through the following technical solutions.
A kind of holohedral symmetry common mode difference mode signal separator, there are two natural sign input terminal, a ground terminal, two differential modes
Signal output end and a common-mode signal output end；Holohedral symmetry common mode difference mode signal separator by two Signal averaging amplifiers and
One common-mode signal estimation circuit composition, two Signal averaging amplifier architectures are identical, are all made of add circuit or subtraction circuit；
For each Signal averaging amplifier there are two input terminal and an output end, one of input terminal is natural sign input terminal point
The natural sign input terminal for making holohedral symmetry common mode difference mode signal separator is not connect, another input terminal is that common-mode signal input terminal is equal
The output end of common-mode signal estimation circuit is connect, the output end of two Signal averaging amplifiers is respectively holohedral symmetry common mode difference mode signal
The difference mode signal output end of separator；Common-mode signal estimation circuit is there are two input terminal, a ground terminal and an output end, and two
A input terminal connects the output end of two Signal averaging amplifiers respectively, and the output end of common-mode signal estimation circuit is that holohedral symmetry is total
The mean value of two input signals is carried out high power by the common-mode signal output end of mould difference mode signal separator, common-mode signal estimation circuit
It is exported after amplification；Holohedral symmetry common mode difference mode signal cyclone separator arrangement is symmetrical, common-mode signal estimation circuit and Signal averaging amplifier
It constitutes closed loop and forms negative-feedback, two differential mode output signal mutual symmetries of holohedral symmetry common mode difference mode signal separator.
The Signal averaging amplifier is made of operational amplifier and resistance, and the non-inverting input terminal of operational amplifier is straight
It connects the voltage-type natural sign input terminal as Signal averaging amplifier or connects the electricity for making Signal averaging amplifier by resistance
Die mould natural sign input terminal, the inverting input terminal of operational amplifier connect the output end, same of operational amplifier by feedback resistance
When connect the common-mode signal input terminal for making Signal averaging amplifier by resistance, the output end of operational amplifier is also that signal is folded simultaneously
Add the output end of amplifier；The common-mode signal estimation circuit is mainly by average voltage circuit and high gain operational amplifier group
At average voltage circuit is made of the equal resistance concatenation of two resistance values, and the both ends of two series resistors are as average voltage electricity
The input terminal on road connects the output end of two Signal averaging amplifiers respectively, and the common end of two series resistors is average voltage electricity
The output end on road；The inverting input terminal of high gain operational amplifier is directly grounded or by resistance eutral grounding, high gain operational amplification
The output end of the homophase input termination average voltage circuit of device, the output end of high gain operational amplifier are common-mode signal measuring and calculating
The output end of circuit.
The Signal averaging amplifier is made of operational amplifier and resistance, and the non-inverting input terminal of operational amplifier is straight
Ground connection passes through resistance eutral grounding, and the inverting input terminal of operational amplifier is natural directly as the current mode of Signal averaging amplifier
It signal input part and connects the output end of operational amplifier by feedback resistance while being connect by resistance and make Signal averaging amplifier
Common-mode signal input terminal, the output end of operational amplifier is also the output end of Signal averaging amplifier simultaneously；The common mode
Signal estimation circuit is mainly made of average voltage circuit and high gain operational amplifier, and average voltage circuit is by two resistance value phases
Deng resistance concatenate constitute, the both ends of two series resistors connect two Signal averagings as the input terminal of average voltage circuit respectively
The output end of amplifier, the common end of two series resistors are the output end of average voltage circuit；High gain operational amplifier
Inverting input terminal be directly grounded or by resistance eutral grounding, the homophase input of high gain operational amplifier terminates average voltage circuit
Output end, the output end of high gain operational amplifier is the output end of common-mode signal estimation circuit.
The Signal averaging amplifier is made of operational amplifier and resistance, and the non-inverting input terminal of operational amplifier is straight
Ground connection passes through resistance eutral grounding, and the inverting input terminal of operational amplifier connects the low-resistance electricity for making Signal averaging amplifier by resistance
Die mould natural sign input terminal and the output end of operational amplifier is connect by feedback resistance while connecing that make signal folded by resistance
Add the common-mode signal input terminal of amplifier, the output end of operational amplifier is also the output end of Signal averaging amplifier simultaneously；Institute
The common-mode signal estimation circuit stated mainly is made of average voltage circuit and high gain operational amplifier, and average voltage circuit is by two
The equal resistance of a resistance value, which concatenates, to be constituted, and the both ends of two series resistors connect two as the input terminal of average voltage circuit respectively
The output end of Signal averaging amplifier, the common end of two series resistors are the output end of average voltage circuit；High-gain fortune
The inverting input terminal for calculating amplifier is directly grounded or by resistance eutral grounding, and the homophase input of high gain operational amplifier terminates voltage
The output end of mean value circuit, the output end of high gain operational amplifier are the output end of common-mode signal estimation circuit.
A kind of multi input addition and subtraction arithmetic unit comprising holohedral symmetry common mode difference mode signal separator, multi input signed magnitude arithmetic(al)
There are two natural voltage signal inputs, two natural electric current signal input parts, a boost voltage signal input part, two for device
Difference mode signal output end and a common-mode signal output end；The Signal averaging amplifier is by operational amplifier and resistance group
At, operational amplifier non-inverting input terminal directly as Signal averaging amplifier voltage-type natural sign input terminal or pass through
Resistance connects the voltage-type natural sign input terminal for making Signal averaging amplifier, and the inverting input terminal of operational amplifier is directly as letter
The current mode natural sign input terminal of number superimposing amplifier and the output end of operational amplifier while logical is connect by feedback resistance
It crosses resistance and connects the common-mode signal input terminal for making Signal averaging amplifier, the output end of operational amplifier is also that Signal averaging is put simultaneously
The output end of big device；The common-mode signal estimation circuit is mainly made of average voltage circuit and high gain operational amplifier,
Average voltage circuit is made of the equal resistance concatenation of two resistance values, and the both ends of two series resistors are as average voltage circuit
Input terminal connects the output end of two Signal averaging amplifiers respectively, and the common end of two series resistors is average voltage circuit
Output end；The inverting input terminal of high gain operational amplifier connects directly or by resistance makees auxiliary signal input terminal, high-gain fortune
The output end of the homophase input termination average voltage circuit of amplifier is calculated, the output end of high gain operational amplifier is common mode letter
The output end of number estimation circuit.
The multi input addition and subtraction arithmetic unit of another holohedral symmetry common mode difference mode signal separator, multi input addition and subtraction arithmetic unit
There are two high resistant nature voltage signal inputs, two low-resistance nature voltage signal inputs, a boost voltage signal inputs
End, two difference mode signal output ends and a common-mode signal output end；The Signal averaging amplifier is by operational amplifier
It is formed with resistance, the non-inverting input terminal of operational amplifier is inputted directly as the high resistant nature voltage signal of Signal averaging amplifier
End connects the high resistant nature voltage signal inputs for making Signal averaging amplifier, the anti-phase input of operational amplifier by resistance
End is connect the low-resistance nature voltage signal inputs for making Signal averaging amplifier by resistance and connects operation amplifier by feedback resistance
The output end of device connects the common-mode signal input terminal for making Signal averaging amplifier, the output end of operational amplifier by resistance simultaneously
It is simultaneously also the output end of Signal averaging amplifier；The common-mode signal estimation circuit is mainly by average voltage circuit and high increasing
Beneficial operational amplifier composition, average voltage circuit are made of the equal resistance concatenation of two resistance values, the both ends of two series resistors
Input terminal as average voltage circuit connects the output end of two Signal averaging amplifiers, the common end of two series resistors respectively
The as output end of average voltage circuit；The inverting input terminal of high gain operational amplifier connects work auxiliary letter directly or by resistance
Number input terminal, the output end of the homophase input termination average voltage circuit of high gain operational amplifier, high gain operational amplifier
Output end be common-mode signal estimation circuit output end.
There are two the holohedral symmetrys of natural sign input terminal, two difference mode signal output ends and a common-mode signal output end for tool
Common mode difference mode signal separator is by the side A Signal averaging amplifier, the side B Signal averaging amplifier and common-mode signal estimation circuit group
At Signal averaging amplifier generallys use analog signal add circuit or subtraction circuit, and common-mode signal estimation circuit is by voltage
Mean value circuit and high gain operational amplifier composition, block diagram are as shown in Figure 1.The Signal averaging amplifier of the side A and the side B respectively has two
A input terminal is connected to the output end of right signal input part and common-mode signal measuring and calculating amplifier, and two Signal averaging amplifiers respectively
Output end be two difference mode signal output ends, two input terminals of average voltage circuit connect two Signal averagings amplifications respectively
The output end of device, two input terminals one of high gain operational amplifier connect average voltage circuit output end, another directly
Ground connection passes through resistance eutral grounding, and the output end of high gain operational amplifier is also that the output end output of common-mode signal estimation circuit is total
Mould signal.
The output signal of average voltage circuit is the average value of two difference mode signals, which enters high gain operational
Amplifier is compared with being grounded zero-signal, since high gain operational amplifier has high amplification factor, common-mode signal measuring and calculating electricity
Road and Signal averaging amplifier constitute closed loop and form negative-feedback, and the amplification factor of Signal averaging amplifier is that low power is limited really
Definite value, common-mode signal estimation circuit export the signal of limited size, and the size of two difference mode signal average values goes to zero, two differences
The signal mutual symmetry of mould signal output end output, i.e., equal in magnitude, opposite polarity signal.
Generally the high gain operational amplifier of common-mode signal estimation circuit is believed with two simultaneously by average voltage circuit
Number superimposing amplifier constitutes negative-feedback, and common-mode signal measuring and calculating amplifier exports one and is added proportional letter to two natural signs
Number, this signal is considered as common-mode signal.Since two Signal averaging amplifier architectures are symmetrical, two Signal averaging amplifier outputs
Voltage between end is proportional to two natural input signal differences, and the output end of two Signal averaging amplifiers exports complementary pair
Claim and the signal proportional to two natural input signal differences, the two signals are considered as difference mode signal.Thus, it is possible to by complete
Two natural input signals are decomposed the differential mode of a common-mode signal and two mutual symmetries by symmetrical common mode difference mode signal separator
Signal realizes the separation of common-mode signal and difference mode signal.
Due to common mode output signal and the addition of two natural input signals, differential mode output signal is also two naturally defeated
Enter the subtraction of signal, holohedral symmetry common mode difference mode signal separator or multi input addition and subtraction arithmetic unit also have addition and subtraction simultaneously
Function, since its addition and subtraction of the symmetry of structure is more preferable than common adder-subtractor effect.Especially multi input addition and subtraction is transported
Device is calculated due to there are four two groups of different types of inputs and the input of boost voltage signal, use is more flexible, function more
Multiplicity.
The holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction realized using operational amplifier and resistance are transported
Calculating device uses the size of its output signal of deep negative-feedback technology to be only dependent upon the resistance parameter in input signal and circuit, easily structure
At high-precision analog signal operation processing circuit, high performance signal processing function is realized.
Holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction arithmetic unit are made of operational amplifier and resistance,
Have the characteristics that simple structure, functional, low in cost, parameter tuning convenience, using flexible, vdiverse in function, believes in simulation
Number transformation and processing, signal operation, analog signals difference, which transmit etc., has extensive practical value in applications of electronic circuitry.
Detailed description of the invention
Fig. 1 holohedral symmetry common mode difference mode signal separator block diagram.
Fig. 2 a common voltage type holohedral symmetry common mode difference mode signal separator.
Fig. 2 b conventional voltage type holohedral symmetry common mode difference mode signal separator.
The brief voltage-type holohedral symmetry common mode difference mode signal separator of Fig. 2 c.
Fig. 3 a common current type holohedral symmetry common mode difference mode signal separator.
Fig. 3 b conventional current type holohedral symmetry common mode difference mode signal separator.
The brief current mode holohedral symmetry common mode difference mode signal separator of Fig. 3 c.
Fig. 4 a common voltage current mode multi input addition and subtraction arithmetic unit.
Fig. 4 b conventional voltage current mode multi input addition and subtraction arithmetic unit.
The brief voltage and current type multi input addition and subtraction arithmetic unit of Fig. 4 c.
Fig. 5 low-drag type holohedral symmetry common mode difference mode signal separator.
Fig. 6 high resistant low-resistance twin voltage type multi input addition and subtraction arithmetic unit.
Specific embodiment
Present invention will now be described in detail with reference to the accompanying drawings..
Embodiment 1
Common voltage type holohedral symmetry common mode difference mode signal separator is as shown in Figure 2 a, the two Signal averaging side amplifier A letters
Number superimposing amplifier is identical with the side B Signal averaging amplifier architecture, respectively by operational amplifier A1a, A1b and resistance R1、R2、R4
Composition, common-mode signal estimation circuit is by average voltage circuit and high gain operational amplifier A0 and resistance R0Composition, and voltage is equal
It is worth circuit by two resistance R3Composition.
The non-inverting input terminal of operational amplifier A1a, A1b pass through resistance R4It connects and makees natural sign input terminal uia、uib, operation puts
The inverting input terminal of big device A1a, A1b pass through feedback resistance R2It connects the output end of operational amplifier A1a, A1b while passing through resistance
R1The output end of operational amplifier A0 is connect, the output end of operational amplifier A1a, A1b are the separation of holohedral symmetry common mode difference mode signal
The difference mode signal output end u of deviceod-、uod+。
Signal averaging amplifier uses subtraction circuit form, the relationship of input and output are as follows:
Two resistance R of average voltage circuit3Concatenation, both ends meet the output end of operational amplifier A1a, A1b, Gao Zeng respectively
The homophase input of beneficial operational amplifier A0 terminates two resistance R3Common end, the inverting input terminal of high gain operational amplifier A0
Pass through resistance R0Ground connection, the output end of high gain operational amplifier A0 are the common mode letter of holohedral symmetry common mode difference mode signal separator
Number output end uoc。
Common-mode signal estimation circuit by the mean value of two differential mode output signals of holohedral symmetry common mode difference mode signal separator with
Zero potential compares, and since circuit is using deep negative-feedback, two difference mode signal output voltages meet:
Thus it can be obtained:
Obviously, common mode output signal uocWith two natural input signal uia、uibThe sum of directly proportional, differential mode output signal
uod-、uod+With two natural input signal uia、uibDifference it is directly proportional, the common mode differential mode of two natural signs is believed to realize
Number separation function.
For the input/output relation for simplifying circuit, R is taken2=R1=R obtains conventional voltage type holohedral symmetry common mode difference mode signal
Separator, as shown in Figure 2 b, at this time common mode output signal, differential mode output signal and two natural input signals relationship are as follows:
uoc=uia+uib
uod-=uia-uib
uod+=uib-uia
R can be taken to be further simplified circuit3=R2=R1=R, and by R0、R4Short circuit obtains brief voltage-type holohedral symmetry
Common mode difference mode signal separator, as shown in Figure 2 c, circuit is further simplified, but common mode output signal, differential mode output signal and two
The relationship of a nature input signal is identical as conventional voltage high resistance type holohedral symmetry common mode difference mode signal separator.
Embodiment 2
Common current type holohedral symmetry common mode difference mode signal separator is as shown in Figure 3a, the two Signal averaging side amplifier A letters
Number superimposing amplifier is identical with the side B Signal averaging amplifier architecture, respectively by operational amplifier A1a, A1b and resistance R1、R2、R4
Composition.
The non-inverting input terminal of operational amplifier A1a, A1b pass through resistance R4Ground connection, the reverse phase of operational amplifier A1a, A1b are defeated
Enter termination and makees natural sign input terminal iib、iiaAnd pass through feedback resistance R2Connect the output end, simultaneously of operational amplifier A1a, A1b
Pass through resistance R1The output end of operational amplifier A0 is connect, the output end of operational amplifier A1a, A1b are holohedral symmetry common mode differential mode
The difference mode signal output end u of demultiplexerod-、uod+。
Signal averaging amplifier uses add circuit form, the relationship of input and output are as follows:
Since circuit is using deep negative-feedback, two difference mode signal output voltages meet:
Thus it can be obtained:
Obviously, common mode output signal uocWith two natural input signal iia、iibThe sum of directly proportional, differential mode output signal
uod-、uod+With two natural input signal iia、iibDifference it is directly proportional, the common mode differential mode of two natural signs is believed to realize
Number separation function.
For the input/output relation for simplifying circuit, R is taken2=R1=R obtains conventional current type holohedral symmetry common mode difference mode signal
Separator, as shown in Figure 3b, at this time common mode output signal, differential mode output signal and two natural input signals relationship are as follows:
R can be taken to be further simplified circuit3=R2=R1=R, and by R0、R4It is complete to obtain brief voltage high resistance type for short circuit
Symmetrical common mode difference mode signal separator, as shown in Figure 3c, circuit is further simplified, but common mode output signal, differential mode output signal
And the relationship of two natural input signals is identical as conventional current type holohedral symmetry common mode difference mode signal separator.
Embodiment 3
Common voltage current mode multi input addition and subtraction arithmetic unit as shown in fig. 4 a, two side Signal averaging amplifier A signals
Superimposing amplifier is identical with the side B Signal averaging amplifier architecture, respectively by operational amplifier A1a, A1b and resistance R1、R2、R4Group
At.
The non-inverting input terminal of operational amplifier A1a, A1b pass through resistance R4It connects and makees natural sign input terminal uia、uib, operation puts
The anti-phase input termination of big device A1a, A1b make natural sign input terminal iib、iiaAnd pass through feedback resistance R2Connect operational amplifier
The output end of A1a, A1b pass through resistance R simultaneously1Connect the output end of operational amplifier A0, the output of operational amplifier A1a, A1b
End is the difference mode signal output end u of holohedral symmetry common mode difference mode signal separatorod-、uod+。
Two resistance R of average voltage circuit3Concatenation, both ends meet the output end of operational amplifier A1a, A1b, Gao Zeng respectively
The homophase input of beneficial operational amplifier A0 terminates two resistance R3Common end, the inverting input terminal of high gain operational amplifier A0
Pass through resistance R0Meet auxiliary signal input terminal ui0, the output end of high gain operational amplifier A0 is holohedral symmetry common mode difference mode signal
The common-mode signal output end u of separatoroc。
Signal averaging amplifier uses adder and substracter circuit form, according to the available input/output relation of principle of stacking are as follows:
Obviously, common mode output signal uoc, differential mode output signal uod-、uod+With two voltage nature input signal uia、uibAnd
Two electric current nature input signal iia、iibCorrelation, to realize more simulation trial functions.
For the input/output relation for simplifying circuit, R is taken2=R1=R obtains conventional voltage current mode multi input addition and subtraction fortune
Calculate device, as shown in Figure 4 b, input/output relation at this time are as follows:
R can be taken to be further simplified circuit3=R2=R1=R, and by R0、R4It is more to obtain brief voltage and current type for short circuit
Addition and subtraction arithmetic unit is inputted, as illustrated in fig. 4 c, circuit is further simplified, but how defeated input/output relation and conventional voltage current mode be
Enter the identical of addition and subtraction arithmetic unit.
Embodiment 4
Low-drag type holohedral symmetry common mode difference mode signal separator is as shown in figure 5, two side Signal averaging amplifier A Signal averagings
Amplifier is identical with the side B Signal averaging amplifier architecture, respectively by operational amplifier A1a, A1b and resistance R1、R2、R4、R5Group
At.
The non-inverting input terminal of operational amplifier A1a, A1b pass through resistance R4Ground connection, the reverse phase of operational amplifier A1a, A1b are defeated
Enter end and passes through resistance R5It connects and makees natural sign input terminal vib、viaAnd pass through feedback resistance R2Connect the defeated of operational amplifier A1a, A1b
Outlet passes through resistance R simultaneously1The output end of operational amplifier A0 is connect, the output end of operational amplifier A1a, A1b are holohedral symmetry
The difference mode signal output end u of common mode difference mode signal separatorod-、uod+。
Signal averaging amplifier uses add circuit form, the relationship of input and output are as follows:
Since circuit is using deep negative-feedback, two difference mode signal output voltages meet:
Thus it can be obtained:
Obviously, common mode output signal uocWith two natural input signal via、vibThe sum of directly proportional, differential mode output signal
uod-、uod+With two natural input signal via、vibDifference it is directly proportional, the common mode differential mode of two natural signs is believed to realize
Number separation function.
Work as R2=R1=R5When, the relationship of common mode output signal, differential mode output signal and two natural input signals are as follows:
Work as R2=R1=2R5When, the relationship of common mode output signal, differential mode output signal and two natural input signals are as follows:
uoc=-(via+vib)
uod-=via-vib
uod+=vib-via
Obviously, the available different coefficient input/output relations of different resistance values are taken.
Embodiment 5
High resistant low-resistance twin voltage type multi input addition and subtraction arithmetic unit is as shown in fig. 6, two side Signal averaging amplifier A signals
Superimposing amplifier is identical with the side B Signal averaging amplifier architecture, respectively by operational amplifier A1a, A1b and resistance R1、R2、R4、R5
Composition.
The non-inverting input terminal of operational amplifier A1a, A1b pass through resistance R4It connects and makees first group of nature voltage signal inputs
uia、uib, the inverting input terminal of operational amplifier A1a, A1b passes through resistance R5It connects and makees second group of nature voltage signal inputs vib、
viaAnd pass through feedback resistance R2Connect the output end of operational amplifier A1a, A1b while also by resistance R1Meet operational amplifier A0
Output end, the output end of operational amplifier A1a, A1b be holohedral symmetry common mode difference mode signal separator difference mode signal output
Hold uod-、uod+。
Two resistance R of average voltage circuit3Concatenation, both ends meet the output end of operational amplifier A1a, A1b, Gao Zeng respectively
The homophase input of beneficial operational amplifier A0 terminates two resistance R3Common end, the inverting input terminal of high gain operational amplifier A0
Pass through resistance R0Meet auxiliary signal input terminal ui0, the output end of high gain operational amplifier A0 is holohedral symmetry common mode difference mode signal
The common-mode signal output end u of separatoroc。
Signal averaging amplifier uses adder and substracter circuit form, common mode output signal uoc, differential mode output signal uod-、uod+With
Two high resistant voltage nature input signal uia、uibWith two low-resistance voltage nature input signal via、vibAnd ancillary input signals
ui0Correlation, to realize more simulation trial functions.
Claims (6)
1. a kind of holohedral symmetry common mode difference mode signal separator, there are two natural sign input terminal, a ground terminal, two differential mode letters
Number output end and a common-mode signal output end；It is characterized by:
Holohedral symmetry common mode difference mode signal separator is made of two Signal averaging amplifiers and a common-mode signal estimation circuit, and two
A Signal averaging amplifier architecture is identical, is all made of add circuit or subtraction circuit；There are two each Signal averaging amplifiers
Input terminal and an output end, one of input terminal connects respectively for natural sign input terminal makees holohedral symmetry common mode difference mode signal point
Natural sign input terminal, another input terminal from device are the output that common-mode signal input terminal connects common-mode signal estimation circuit
End, the output end of two Signal averaging amplifiers is respectively the difference mode signal output end of holohedral symmetry common mode difference mode signal separator；
There are two input terminal, a ground terminal and an output end, two input terminals to connect two respectively for common-mode signal estimation circuit
The output end of Signal averaging amplifier, the output end of common-mode signal estimation circuit are holohedral symmetry common mode difference mode signal separator
Common-mode signal output end, common-mode signal estimation circuit export after the mean value of two input signals is carried out magnification at high multiple；
Holohedral symmetry common mode difference mode signal cyclone separator arrangement is symmetrical, and common-mode signal estimation circuit and Signal averaging amplifier constitute closed loop
And negative-feedback is formed, two differential mode output signal mutual symmetries of holohedral symmetry common mode difference mode signal separator；
The Signal averaging amplifier is made of operational amplifier and resistance, is connect by resistance and is made Signal averaging amplifier
Common-mode signal input terminal, the output end of operational amplifier are also the output end of Signal averaging amplifier simultaneously；
The common-mode signal estimation circuit is made of average voltage circuit and high gain operational amplifier, average voltage circuit by
The equal resistance of two resistance values, which concatenates, to be constituted, and the both ends of two series resistors connect two as the input terminal of average voltage circuit respectively
The output end of a Signal averaging amplifier, the common end of two series resistors are the output end of average voltage circuit.
2. holohedral symmetry common mode difference mode signal separator according to claim 1, it is characterised in that:
The non-inverting input terminal of operational amplifier is directly as the voltage-type natural sign input terminal of Signal averaging amplifier or logical
It crosses resistance and connects the voltage-type natural sign input terminal for making Signal averaging amplifier, the inverting input terminal of operational amplifier passes through feedback
Resistance connects the output end of operational amplifier；
The inverting input terminal of high gain operational amplifier is directly grounded or by resistance eutral grounding, the same phase of high gain operational amplifier
The output end of input termination average voltage circuit, the output end of high gain operational amplifier is the defeated of common-mode signal estimation circuit
Outlet.
3. holohedral symmetry common mode difference mode signal separator according to claim 1, it is characterised in that:
The non-inverting input terminal of operational amplifier is directly grounded or by resistance eutral grounding, and the inverting input terminal of operational amplifier is directly made
For Signal averaging amplifier current mode natural sign input terminal and connect by feedback resistance the output end of operational amplifier；
The inverting input terminal of high gain operational amplifier is directly grounded or by resistance eutral grounding, the same phase of high gain operational amplifier
The output end of input termination average voltage circuit, the output end of high gain operational amplifier is the defeated of common-mode signal estimation circuit
Outlet.
4. holohedral symmetry common mode difference mode signal separator according to claim 1, it is characterised in that:
The non-inverting input terminal of operational amplifier is directly grounded or by resistance eutral grounding, and the inverting input terminal of operational amplifier passes through electricity
Resistance connects the low-resistance voltage-type natural sign input terminal for making Signal averaging amplifier and connects the defeated of operational amplifier by feedback resistance
Outlet；
The inverting input terminal of high gain operational amplifier is directly grounded or by resistance eutral grounding, the same phase of high gain operational amplifier
The output end of input termination average voltage circuit, the output end of high gain operational amplifier is the defeated of common-mode signal estimation circuit
Outlet.
5. a kind of multi input signed magnitude arithmetic(al) comprising holohedral symmetry common mode difference mode signal separator described in claim 1,2 or 3
Device, it is characterised in that:
Multi input addition and subtraction arithmetic unit there are two natural voltage signal inputs, two natural electric current signal input parts, one it is auxiliary
Help voltage signal inputs, two difference mode signal output ends and a common-mode signal output end；
The non-inverting input terminal of operational amplifier is directly as the voltage-type natural sign input terminal of Signal averaging amplifier or logical
Cross resistance and connect the voltage-type natural sign input terminal for making Signal averaging amplifier, the inverting input terminal of operational amplifier directly as
The current mode natural sign input terminal of Signal averaging amplifier and the output end that operational amplifier is connect by feedback resistance；
The inverting input terminal of high gain operational amplifier connects directly or by resistance makees auxiliary signal input terminal, and high gain operational is put
The output end of the homophase input termination average voltage circuit of big device, the output end of high gain operational amplifier are that common-mode signal is surveyed
Calculate the output end of circuit.
6. a kind of multi input signed magnitude arithmetic(al) comprising holohedral symmetry common mode difference mode signal separator described in claim 1,2 or 4
Device, it is characterised in that:
There are two high resistant nature voltage signal inputs, two low-resistance nature voltage signal inputs for multi input addition and subtraction arithmetic unit
End, a boost voltage signal input part, two difference mode signal output ends and a common-mode signal output end；
The non-inverting input terminal of operational amplifier directly as Signal averaging amplifier high resistant nature voltage signal inputs or
The high resistant nature voltage signal inputs for making Signal averaging amplifier are connect by resistance, the inverting input terminal of operational amplifier passes through
Resistance connects the low-resistance nature voltage signal inputs for making Signal averaging amplifier and connects the defeated of operational amplifier by feedback resistance
Outlet；
The inverting input terminal of high gain operational amplifier connects directly or by resistance makees auxiliary signal input terminal, and high gain operational is put
The output end of the homophase input termination average voltage circuit of big device, the output end of high gain operational amplifier are that common-mode signal is surveyed
Calculate the output end of circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610831198.7A CN106411278B (en) | 2016-09-19 | 2016-09-19 | Holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction arithmetic unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610831198.7A CN106411278B (en) | 2016-09-19 | 2016-09-19 | Holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction arithmetic unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106411278A CN106411278A (en) | 2017-02-15 |
| CN106411278B true CN106411278B (en) | 2019-02-22 |
Family
ID=57996717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610831198.7A Active CN106411278B (en) | 2016-09-19 | 2016-09-19 | Holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction arithmetic unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106411278B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102559563B1 (en) * | 2018-07-16 | 2023-07-26 | 에스케이하이닉스 주식회사 | Integrated circuit |
| CN109873964A (en) * | 2018-12-28 | 2019-06-11 | 中国科学院微电子研究所 | Annular amplifier and the residue-gain-circuit for applying it |
| CN112666414B (en) * | 2020-12-16 | 2023-10-27 | 北京航天微电科技有限公司 | Differential mode common mode interference separator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19858078B4 (en) * | 1998-12-16 | 2012-04-12 | Nokia Mobile Phones Ltd. | Signal amplifier circuit with balanced inputs and outputs |
| CN202353517U (en) * | 2011-11-30 | 2012-07-25 | 武汉海王机电工程技术公司 | Ultralow noise direct current difference and sum value amplifying device with high common-mode rejection ratio |
| CN103095233A (en) * | 2013-01-23 | 2013-05-08 | 电子科技大学 | Amplifier eliminating direct current offsets |
| CN203039647U (en) * | 2013-01-04 | 2013-07-03 | 洛阳隆盛科技有限责任公司 | Linear amplification circuit for micro signals |
| CN203457116U (en) * | 2013-07-31 | 2014-02-26 | 快捷半导体(苏州)有限公司 | CMFB differential amplification circuit and integrated circuit |
| CN104506171A (en) * | 2014-12-09 | 2015-04-08 | 中国航空工业集团公司第六三一研究所 | Signal common-mode level and amplitude adjustment method and circuit |
| CN105680808A (en) * | 2011-08-31 | 2016-06-15 | 瑞萨电子株式会社 | Semiconductor integrated circuit |
-
2016
- 2016-09-19 CN CN201610831198.7A patent/CN106411278B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19858078B4 (en) * | 1998-12-16 | 2012-04-12 | Nokia Mobile Phones Ltd. | Signal amplifier circuit with balanced inputs and outputs |
| CN105680808A (en) * | 2011-08-31 | 2016-06-15 | 瑞萨电子株式会社 | Semiconductor integrated circuit |
| CN202353517U (en) * | 2011-11-30 | 2012-07-25 | 武汉海王机电工程技术公司 | Ultralow noise direct current difference and sum value amplifying device with high common-mode rejection ratio |
| CN203039647U (en) * | 2013-01-04 | 2013-07-03 | 洛阳隆盛科技有限责任公司 | Linear amplification circuit for micro signals |
| CN103095233A (en) * | 2013-01-23 | 2013-05-08 | 电子科技大学 | Amplifier eliminating direct current offsets |
| CN203457116U (en) * | 2013-07-31 | 2014-02-26 | 快捷半导体(苏州)有限公司 | CMFB differential amplification circuit and integrated circuit |
| CN104506171A (en) * | 2014-12-09 | 2015-04-08 | 中国航空工业集团公司第六三一研究所 | Signal common-mode level and amplitude adjustment method and circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106411278A (en) | 2017-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106411278B (en) | Holohedral symmetry common mode difference mode signal separator and its multi input addition and subtraction arithmetic unit | |
| CN103199806A (en) | Programmable analog unit for processing sensor signal | |
| EP1977507A1 (en) | Multiple-input and multiple-output amplifier | |
| CN104901674B (en) | Current-mode four-quadrant CMOS analog multiplication circuits | |
| Azhari et al. | AZKA cell, the current-mode alternative of Wheatstone bridge | |
| CN107425845A (en) | A kind of superposition circuit and floating voltage D/A converting circuit | |
| CN100588984C (en) | Verification system of electric energy measurement chip | |
| CN105634449B (en) | differential voltage absolute value circuit | |
| CN202353517U (en) | Ultralow noise direct current difference and sum value amplifying device with high common-mode rejection ratio | |
| CN207427115U (en) | Analog signals difference Transmission system | |
| Wang et al. | A novel Nth-order voltage-mode universal filter based on CMOS CFOA | |
| CN104218906B (en) | Nanovolt Amplifier Design | |
| CN106505985B (en) | It is single-ended to differential conversion circuit and signal processing module | |
| KR20030053492A (en) | Universal instrumentation amplifier | |
| CN106508091B (en) | A kind of preposition amplification method of complementary metal oxide semiconductors (CMOS) controllable gain and circuit | |
| Pandey et al. | Operational Amplifier (Op-Amp) | |
| CN206878785U (en) | General wideband current amplifier and wideband current amplifying device | |
| CN202195824U (en) | Position detection circuit for non-isolation type sine and cosine rotating transformer | |
| CN206711075U (en) | A kind of four-quadrant analog divider | |
| CN206975109U (en) | A kind of real-time current signal-data processing system | |
| Ghallab et al. | A new design of a current-mode wheatstone bridge using operational floating current conveyor | |
| CN102868405A (en) | Parallel analog-digital signal conversion device | |
| CN102393215A (en) | Position detection circuit of non-isolation sine and cosine resolver | |
| CN206892867U (en) | A kind of memristor based on passive filtering and bridge rectifier is equivalent to realize circuit | |
| CN202750073U (en) | Parallel analog-to-digital signal conversion apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |