CN108170194A - A kind of high energy efficiency voltage driver of internet of things oriented terminal device - Google Patents
A kind of high energy efficiency voltage driver of internet of things oriented terminal device Download PDFInfo
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- CN108170194A CN108170194A CN201711373684.XA CN201711373684A CN108170194A CN 108170194 A CN108170194 A CN 108170194A CN 201711373684 A CN201711373684 A CN 201711373684A CN 108170194 A CN108170194 A CN 108170194A
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- amplifier
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/461—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using an operational amplifier as final control device
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/462—Regulating voltage or current wherein the variable actually regulated by the final control device is dc as a function of the requirements of the load, e.g. delay, temperature, specific voltage/current characteristic
- G05F1/465—Internal voltage generators for integrated circuits, e.g. step down generators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017545—Coupling arrangements; Impedance matching circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/0185—Coupling arrangements; Interface arrangements using field effect transistors only
- H03K19/018557—Coupling arrangements; Impedance matching circuits
Abstract
The invention discloses a kind of high energy efficiency voltage drivers of internet of things oriented terminal device, and including two stage amplifer, left side is the first order of amplifier, and right side is the second level of amplifier；The amplifier first order takes the structure of Foldable cascade, and the second level is source follower；The present invention is compensated without using miller capacitance, using the form stable circuit of electric resistance partial pressure, is not needed to high-precision miller capacitance, is reduced chip finished product and chip area.Meanwhile bias circuit portion of the present invention introduces feedback, improves the stability of circuit；The second level of dual-stage amplifier increases whole driving force using source follower.
Description
Technical field
The invention belongs to IC design fields, are specifically that a kind of having for internet of things oriented terminal device is very big
The amplifier of driving force.
Background technology
Voltage driver is exactly basically an operational amplifier, and only its driving force having is than common fortune
Put bigger.The output signal and input signal of Full differential operational amplifier are differential signal, since it is in noise, voltage swing
Width, bandwidth frequency and unit gain etc. all show preferable superiority, so the form of fully differential just often becomes height
The synonym of performance.Traditional difference amplifier common are single-stage and two-stage differential amplifier, and single-stage Differential OPAMP is also
It is segmented into simple fully differential, telescopic cascode and collapsible cascode these three structures.
(1) it is as shown in Figure 1 a simple simple-stage differential amplifier, Vdd represents supply voltage, and M1 and M2 form input
Differential pair, M3 and M4 form load, and the gain of this amplifier is expressed as：
Av≈gm1(ro1||ro3)
Wherein：Gm1 represents input pipe M1 mutual conductances, and ro1 and ro3 represent the output resistance of M1 and M3 pipes.
(2) in the design process of analog circuit, the operational amplifier of cascode structure is most widely used one
Kind, it under the premise of keep frequency characteristic is outstanding, can realize the maximization of voltage gain.The purpose of this structure is selected, greatly
Majority is provided to raising gain as big as possible.The operational amplifier of cascode structure is broadly divided into telescopic and folds
Two kinds of formula.The structure of telescopic cascode operational amplifier is telescopic common as shown in Fig. 2, in contrast to simple structure amplifier
Source-common gate structure increases two pairs of NMOS tubes so that amplifier gain is considerably improved.The mutual conductance of input pipe in the circuit
It is still gm1, input impedance is about increased to (gm4ro4)ro2||(gm6ro6)ro8, it is hereby achieved that the gain of the circuit is：
Av≈gm1[(gm4ro4)ro2||(gm6ro6)ro8]
It can be seen that gain of the telescoping structure than simple structure improves many.
If gain still not enough just needs to increase level-one using two stage amplifer knot for single-stage telescoping structure
Structure, for two stage amplifer structure its gain be equal to front and back stages amplifier gain product, can effectively promote amplifier in this way
Gain, be illustrated in figure 3 a simple two stage amplifer circuit structure.But the usual stability of two stage amplifer is poor, i.e. phase
Nargin is relatively low, at this time usually requires stability in use compensation technique to make its stabilization, generally using miller-compensated technology, that is, exists
Dominant pole and secondary pole of one capacitance of bridging so as to adjust entire circuit between the first order output of amplifier and second level output
The effect for improving phase margin is played in position between point, and such as the capacitance Cc in Fig. 3, but this compensation can increase a right side half
Plane zero, this is obtained by the forward path of miller capacitance, and Right-half-plant zero increases phase shift, but amplitude is to increase
Add, phase margin can be caused to reduce, to shift or offset this zero needs to use other technologies, such as addition zeroing electricity
Resistance etc..
Invention content
Traditional two stage amplifer in order to ensure circuit stability and enough phase margins, using miller-compensated technology come into
Row compensation, but this compensation reduces the bandwidth of circuit and introduces new Right-half-plant zero.The present invention provides a kind of herein
The high energy efficiency voltage driver of internet of things oriented terminal device, compensates without using miller capacitance, using electric resistance partial pressure
Form stable circuit does not need to high-precision miller capacitance, reduces chip finished product and chip area.Meanwhile present invention biasing
Circuit part introduces feedback, improves the stability of circuit；The second level of dual-stage amplifier is increased using source follower
Whole driving force.
The invention is realized in this way a kind of high energy efficiency voltage driver of internet of things oriented terminal device is constructed, it is special
Sign is：
The high energy efficiency voltage driver includes two stage amplifer, and left side is the first order of amplifier, right side for amplifier the
Two level；The amplifier first order takes the structure of Foldable cascade, and the second level is source follower；
Wherein, for the first order of amplifier, composition include metal-oxide-semiconductor M1, M2, M3, M4, M5, M6, M7, M8, M9,
M10、M11、M12、M13、M14；Wherein, metal-oxide-semiconductor M1, M2 is Differential Input to pipe, and M7, M8 and M1, M2 form cascade,
Metal-oxide-semiconductor M3, M4 provide tail current, and metal-oxide-semiconductor M5, M6 provide electric current, and metal-oxide-semiconductor M9 to M14 is the load of the first order, metal-oxide-semiconductor M8's
The drain electrode of the output Vout1 to drain as the first order, metal-oxide-semiconductor M10 are connected with the input Vin of the second level.
On the other hand, the high energy efficiency voltage driver of a kind of internet of things oriented terminal device, it is characterised in that：For
For the first order of amplifier, in direct current DC, the output Vout1 of the first order than Vin high Vgs, Vout2 than Vin high Vgs,
So Vout2 is almost equal under DC case with Vout1；VO is the equal of the electric resistance partial pressure between Vout1 and Vout2, by
This understands that the DC voltage of VO is 0；Its effect is that circuit is made to be compensated well with electric resistance partial pressure to circuit, avoids using rice
The deficiency that capacitance compensation newly introduces is strangled, and avoids using high-accuracy capacitor.
On the other hand, the high energy efficiency voltage driver of a kind of internet of things oriented terminal device, it is characterised in that：Second
The source follower of grade, gain 1, main purpose are to increase whole driving force.
On the other hand, the high energy efficiency voltage driver of a kind of internet of things oriented terminal device, it is characterised in that：Second
Its composition of the source follower of grade includes metal-oxide-semiconductor M15, M16, M17 and resistance R1 and R2；The output of resistance R1 and the first order
Vout1 connections.
On the other hand, the high energy efficiency voltage driver of a kind of internet of things oriented terminal device, it is characterised in that：It is described
High energy efficiency voltage driver further includes bias circuit portion；Its form include metal-oxide-semiconductor M1, M2, M3, M4, M5, M6, M7, M8, M9,
M10、M11、M12、M13、M14、M15、M16、M17、M18、M19、M20、M21、M22、M23、M24、M25、M26、M27、M28；
Its corresponding NIB end is the electric current introduced from reference circuit part；
The source electrode of metal-oxide-semiconductor M11 is denoted as A points, and the drain electrode of metal-oxide-semiconductor M11 is denoted as B points, and the drain electrode of metal-oxide-semiconductor M12 is denoted as C points, MOS
The source electrode of pipe M14 is denoted as D points, and wherein A points are connected with D points.Since metal-oxide-semiconductor M11 makees current mirror, thus its electric current by
NIB is determined, and unrelated with metal-oxide-semiconductor M11, M12, if therefore A points voltage increase, to ensure that electric current is constant, the raising of B points voltage, then C
Point voltage reduces, and correspondingly D points voltage reduces, therefore forms negative-feedback；The drain current of metal-oxide-semiconductor M14 is amplifier part
Electric current I；And bias nbias1 by metal-oxide-semiconductor M18 drain electrode draw, nbias2 by metal-oxide-semiconductor M12 drain electrode draw, nbias3 by
The drain electrode of metal-oxide-semiconductor M18 is drawn.
The invention has the advantages that：Invention provides a kind of high energy efficiency voltage driving of internet of things oriented terminal device herein
Device is compensated without using miller capacitance, using the form stable circuit of electric resistance partial pressure, does not need to high-precision Miller electricity
Hold, reduce chip finished product and chip area.Meanwhile bias circuit portion of the present invention introduces feedback, improves the steady of circuit
It is qualitative；The second level of dual-stage amplifier increases whole driving force using source follower.In other words, the present invention passes through
It is described above, there is the advantages that driving force bigger, cost reduction, chip area reduction, circuit is more stablized.At the same time,
The present invention is dexterously compensated without carrying out stabiloity compensation using miller-compensated technology with electric resistance partial pressure, very
Evade the use of high-accuracy capacitor well, reduce the difficulty of realization.
Description of the drawings
Fig. 1 is simple Differential OPAMP structure diagram；
Fig. 2 is telescopic cascode operational amplifier schematic diagram；
Fig. 3 is a simple two stage amplifer structure diagram；
Fig. 4 is drive body partial schematic diagram of the present invention；
Fig. 5 is biasing circuit schematic diagram of the present invention.
Specific embodiment
Below in conjunction with attached drawing 1- Fig. 5, the present invention is described in detail, to the technical solution in the embodiment of the present invention into
Row clearly and completely describes, it is clear that described embodiment is only the reality of part of the embodiment of the present invention rather than whole
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
Every other embodiment, shall fall within the protection scope of the present invention.
The present invention provides a kind of high energy efficiency voltage driver of internet of things oriented terminal device herein by improving；As Fig. 4-
Shown in Fig. 5, it can be practiced as follows；
The drive body circuit of the design is as shown in Figure 4；It is substantially exactly the amplifier of a two-stage, is on the left of dotted line
The first order of amplifier, right side are the second level of amplifier.The amplifier first order takes the structure of Foldable cascade, and the second level is very
Simple source follower.
First order M1, M2 is Differential Input to pipe, and M7, M8 and M1, M2 form cascade, and M3, M4 provide tail current,
M5, M6 provide electric current, and M9 to M14 is the load of the first order, the drain electrode and the of the drain electrode of M8 for the output Vout1, M10 of the first order
The input Vin of two level is connected.The first order is exactly the Folded-cascode amplifier structure of a very standard.The second level is very simple
Single source follower, gain 1, main purpose are to increase whole driving force.
In direct current DC, Vout1 is than Vin high Vgs, and Vout2 is than Vin high Vgs, so Vout2 and Vout1 is in direct current
In the case of it is almost equal.VO is the equal of the electric resistance partial pressure between Vout1 and Vout2, it can thus be appreciated that the DC voltage of VO is 0.
Circuit well compensates for deficiency that circuit with electric resistance partial pressure, avoids newly introducing, and avoid using miller capacitance compensation
Using high-accuracy capacitor, cost and area are reduced.
It is illustrated in figure 5 the bias circuit portion of the design.NIB is the electric current introduced from reference circuit part.Such as scheme M11
Source electrode be denoted as A points, the drain electrode of M11 is denoted as B points, and the drain electrode of M12 is denoted as C points, and the source electrode of M14 is denoted as D points, wherein A points and D points
It is connected.Since M11 makees current mirror, so its electric current is determined by NIB, and it is unrelated with M11, M12, if therefore A point voltages
Raising, to ensure that electric current is constant, the raising of B points voltage, then C points voltage reduction, correspondingly D points voltage reduces, therefore forms negative
Feedback.The drain current of M14 is the electric current I of amplifier part.And bias nbias1 and drawn by the drain electrode of M18, nbias2 is by M12
Drain electrode draw, nbias3 by M18 drain electrode draw.
By described above, the high energy efficiency voltage driver of internet of things oriented terminal device provided by the present invention is come
Say that there is the advantages that driving force bigger, cost reduction, chip area reduction, circuit is more stablized.At the same time, it is of the invention
Stabiloity compensation is not carried out using miller-compensated technology, but is dexterously compensated with electric resistance partial pressure, is advised well
The use of high-accuracy capacitor has been kept away, has reduced the difficulty of realization.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide range caused.
Claims (5)
1. a kind of high energy efficiency voltage driver of internet of things oriented terminal device, it is characterised in that：
The high energy efficiency voltage driver includes two stage amplifer, and left side is the first order of amplifier, and right side is the second level of amplifier；
The amplifier first order takes the structure of Foldable cascade, and the second level is source follower；
Wherein, for the first order of amplifier, composition include metal-oxide-semiconductor M1, M2, M3, M4, M5, M6, M7, M8, M9, M10,
M11、M12、M13、M14；Wherein, metal-oxide-semiconductor M1, M2 is Differential Input to pipe, M7, M8 and M1, M2 formation cascades, metal-oxide-semiconductor
M3, M4 provide tail current, and metal-oxide-semiconductor M5, M6 provide electric current, and metal-oxide-semiconductor M9 to M14 is the load of the first order, and the drain electrode of metal-oxide-semiconductor M8 is
The drain electrode of the output Vout1 of the first order, metal-oxide-semiconductor M10 are connected with the input Vin of the second level.
2. a kind of high energy efficiency voltage driver of internet of things oriented terminal device according to claim 1, it is characterised in that：It is right
For the first order of amplifier, in direct current DC, the output Vout1 of the first order is than Vin high Vgs, and Vout2 is than Vin high
Vgs, so Vout2 is almost equal under DC case with Vout1；VO is the equal of the resistance point between Vout1 and Vout2
Pressure, it can thus be appreciated that the DC voltage of VO is 0；Its effect is that circuit is made to be compensated well with electric resistance partial pressure to circuit, is avoided
The deficiency newly introduced using miller capacitance compensation, and avoid using high-accuracy capacitor.
3. a kind of high energy efficiency voltage driver of internet of things oriented terminal device according to claim 1, it is characterised in that：The
The source follower of two level, gain 1, main purpose are to increase whole driving force.
4. a kind of high energy efficiency voltage driver of internet of things oriented terminal device according to claim 3, it is characterised in that：The
Its composition of the source follower of two level includes metal-oxide-semiconductor M15, M16, M17 and resistance R1 and R2；The output of resistance R1 and the first order
Vout1 connections.
5. a kind of high energy efficiency voltage driver of internet of things oriented terminal device according to claim 1, it is characterised in that：Institute
It states high energy efficiency voltage driver and further includes bias circuit portion；Its form include metal-oxide-semiconductor M1, M2, M3, M4, M5, M6, M7, M8,
M9、M10、M11、M12、M13、M14、M15、M16、M17、M18、M19、M20、M21、M22、M23、M24、M25、M26、M27、
M28；
Its corresponding NIB end is the electric current introduced from reference circuit part；
The source electrode of metal-oxide-semiconductor M11 is denoted as A points, and the drain electrode of metal-oxide-semiconductor M11 is denoted as B points, and the drain electrode of metal-oxide-semiconductor M12 is denoted as C points, metal-oxide-semiconductor
The source electrode of M14 is denoted as D points, and wherein A points are connected with D points.Since metal-oxide-semiconductor M11 makees current mirror, so its electric current is by NIB
Determine, it is and unrelated with metal-oxide-semiconductor M11, M12, if therefore A points voltage increase, to ensure that electric current is constant, the raising of B points voltage, then C points
Voltage reduces, and correspondingly D points voltage reduces, therefore forms negative-feedback；The drain current of metal-oxide-semiconductor M14 is amplifier part
Electric current I；And bias nbias1 and drawn by the drain electrode of metal-oxide-semiconductor M18, nbias2 is drawn by the drain electrode of metal-oxide-semiconductor M12, and nbias3 is by MOS
The drain electrode of pipe M18 is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711373684.XA CN108170194B (en) | 2017-12-19 | 2017-12-19 | High-energy-efficiency voltage driver for terminal equipment of Internet of things |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711373684.XA CN108170194B (en) | 2017-12-19 | 2017-12-19 | High-energy-efficiency voltage driver for terminal equipment of Internet of things |
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| CN108170194A true CN108170194A (en) | 2018-06-15 |
| CN108170194B CN108170194B (en) | 2020-07-28 |
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| CN201711373684.XA Active CN108170194B (en) | 2017-12-19 | 2017-12-19 | High-energy-efficiency voltage driver for terminal equipment of Internet of things |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167935A (en) * | 2021-08-02 | 2022-03-11 | 沈阳工业大学 | Current feedback voltage driver circuit with recovery time acceleration function |
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| CN1108445A (en) * | 1994-01-12 | 1995-09-13 | 株式会社日立制作所 | Analog filter circuit and semiconductor integrated circuit device using the same |
| CN101110573A (en) * | 2007-06-28 | 2008-01-23 | 复旦大学 | Ultra-broadband low-noise amplifier circuit adopting noise cancellation technology |
| CN104242937A (en) * | 2013-06-17 | 2014-12-24 | 上海华虹宏力半导体制造有限公司 | Simulation reference level buffer for pipelined analog-digital converter |
| CN107197176A (en) * | 2012-02-20 | 2017-09-22 | 索尼公司 | Image device and the electronic installation including it |
| CN107248850A (en) * | 2017-04-24 | 2017-10-13 | 东南大学 | One kind is without inductance consumption high gain high linearity broadband low-noise amplifier |
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2017
- 2017-12-19 CN CN201711373684.XA patent/CN108170194B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108445A (en) * | 1994-01-12 | 1995-09-13 | 株式会社日立制作所 | Analog filter circuit and semiconductor integrated circuit device using the same |
| CN101110573A (en) * | 2007-06-28 | 2008-01-23 | 复旦大学 | Ultra-broadband low-noise amplifier circuit adopting noise cancellation technology |
| CN107197176A (en) * | 2012-02-20 | 2017-09-22 | 索尼公司 | Image device and the electronic installation including it |
| CN104242937A (en) * | 2013-06-17 | 2014-12-24 | 上海华虹宏力半导体制造有限公司 | Simulation reference level buffer for pipelined analog-digital converter |
| CN107248850A (en) * | 2017-04-24 | 2017-10-13 | 东南大学 | One kind is without inductance consumption high gain high linearity broadband low-noise amplifier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167935A (en) * | 2021-08-02 | 2022-03-11 | 沈阳工业大学 | Current feedback voltage driver circuit with recovery time acceleration function |
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