CN1428934A - Voltage comparator using neuron circuit as basic unit - Google Patents
Voltage comparator using neuron circuit as basic unit Download PDFInfo
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- CN1428934A CN1428934A CN 01144900 CN01144900A CN1428934A CN 1428934 A CN1428934 A CN 1428934A CN 01144900 CN01144900 CN 01144900 CN 01144900 A CN01144900 A CN 01144900A CN 1428934 A CN1428934 A CN 1428934A
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Abstract
The voltage comparator circuit using neural circuit as basic unit includes an either-or circuit with two input ends and one control end for selecting one of two input signals of comparator; and input capacitor, its one end is connected with output of ether-or circuit, it is used for implementing subtraction operation of two input signals of comparator; an inverter circuit, its input is connected with another end of input capacitor, it is used for amplifying the difference of two input signals of the comparator; and an electronic switch, two ends of said switch are respectively connected with input end and output end of the inverter circuit, and its control end is connected with control end of the either-or circuit, it is used for creating or cutting feedback circuit between output and input of inverter circuit.
Description
Technical field
The present invention relates to a kind of is the voltage comparator circuit of elementary cell with the neuron circuit.
Background technology
Present comparator all makes up with circuit common, and wanting to reach high-resolution and big operating voltage range is the comparison difficulty.
Summary of the invention
Task of the present invention provides the voltage comparator that a kind of resolution is higher, operating voltage range is big.
Task of the present invention is achieved through the following technical solutions:
A kind of is the voltage comparator of elementary cell with the neuron circuit, and it comprises:
One has the alternative circuit of two inputs and a control end, is used to one of two input signals of selecting by comparator;
One input capacitance, the output of one termination alternative circuit, it is used to finish the subtraction of two input signals of comparator;
One inverter circuit, its input connects the other end of input capacitance, and it is used for the difference of two input signals of comparator is amplified;
One electronic switch, its switch ends connect input, the output of inverter circuit respectively, the control end of its control termination alternative circuit, and it is used for setting up or cut off feedback loop between the output input of inverter circuit.
Described alternative circuit is made of two electronic switches, and an end of two electronic switches is respectively one of two inputs of alternative circuit, and the other end of two electronic switches also connects, as the output of alternative circuit.
Described electronic switch is made of a nmos pass transistor, a PMOS transistor and an inverter, the source electrode of two transistor and drain electrode butt joint respectively, as the two ends of electronic switch, inverter is connected between the grid of two transistor respectively, and the input of inverter is as the control end of electronic switch.
Described inverter circuit is made of a nmos pass transistor, a PMOS transistor, and the grid of two transistor also connects, and as the input of inverter circuit, the drain electrode of two transistor also connects, as the output of inverter circuit.
The output of described inverter circuit is connected in series the one-level amplifier at least.
Comparator circuit of the present invention is that elementary cell makes up with the neuron circuit, has resolution height, big, the advantage of simple structure of operating voltage range, since simple in structure, so easy to adjust.
Description of drawings
Fig. 1 is the logical circuitry of comparator of the present invention;
Fig. 2 is the logical circuitry of inverter circuit;
Fig. 3 is the logical circuitry of electronic switch;
Fig. 4 is the logical circuitry of alternative circuit.
Embodiment
See also the empty frame part of Fig. 1.This is a neuron circuit of having simplified, and so-called neuron is the basic processing unit of neural net, and it generally is the nonlinear device [1] of the output of input/list more than.The present invention be a kind of be the comparator of elementary cell with the neuron circuit, it comprises:
Alternative circuit Xmux1 with two inputs and a control end, it is used for one of two input signal Va, Vb of selecting according to control signal CTL by comparator;
An input capacitance Cin, the output of one termination alternative circuit, it is used to finish two input signal Va of comparator and the subtraction of Vb;
An inverter circuit Inv2, its input connects the other end of input capacitance Cin, and it is used for the difference of two input signal Va, Vb of comparator is amplified;
An electronic switch Xsw1, its switch ends connects input, the output of inverter circuit Inv2 respectively, the control end of its control termination alternative circuit Xmux1, it is used for setting up or cut off feedback loop between the output input of inverter circuit.
In addition, as shown in Figure 1, also be connected in series casacade multi-amplifier at the output of inverter circuit of the present invention, this amplifier can be inverter circuit.
This comparator have reset, two operating states relatively, control its operating state with CTL.Before making comparisons, at first putting CTL is high level, and circuit is in reset mode, and 2 node potentials are Vb, and 3 nodes are in saltus step current potential V
T, at this moment, the output invalid data.When CTL became low level, 2 node potentials became Va, and 3 nodes become V
T+ Δ V=V
T+ Va-Vb, the output result is their magnitude relationship.This circuit can be finished the comparison of Va and Vb.Operation principle is as described below.
Reset mode: CTL input high level, electronic switch Xsw1 closure, alternative circuit Xmux1 gating Vb.At this moment, because the Xsw1 closure, node 3 and 4 short circuits form feedback, under the effect of feedback circuit, 3 current potentials are placed the saltus step current potential V of inverter
T2 current potentials then are Vb.
Compare state: the CTL input low level, switch Xsw1 disconnects, alternative circuit Xmux1 gating Va.At this moment, 2 jumps in potential become Va, variation delta V=Va-Vb.Therefore, 3 current potentials become V
T+ Δ V.When Δ V＞0, through the amplification of multistage amplifier circuit, out is output as 1; When Δ V＜0, out is output as 0.
See also Fig. 2.Above-mentioned inverter circuit is the typical CMOS inverter that is made of a NMOS pipe M1 and PMOS pipe M2, and the grid of two pipes also connects, and as the input X of inverter circuit, the drain electrode of two pipes also connects, as the output Y of inverter circuit.
See also Fig. 3.Above-mentioned electronic switch is made of a NMOS pipe M1, a PMOS pipe M2, an inverter, the source electrode of two pipes and drain electrode butt joint respectively, as the two ends X and the Y of electronic switch, inverter is connected between the grid of two pipes respectively, and the input of inverter is as the control signal CTL of electronic switch.
See also Fig. 4.Above-mentioned alternative circuit is made of two electronic switches, and an end of two electronic switches is respectively two the input X1 and the X2 of alternative circuit, and the other end of two electronic switches also connects, as the output Y of alternative circuit.Wherein: the formation of each electronic switch is the same with Fig. 3, manages M2 or M3 and M4 by a shared inverter, NMOS pipe M1 and PMOS and constitutes.
Circuit in the empty frame of Fig. 1 is the neuron circuit of having simplified, and two inputs of circuit in different moment inputs, and are finished computing at state relatively according to the control signal of circuit.The three grades of inverters in back are done to amplify usefulness, and its progression can change according to actual needs.
Comparator of the present invention externally has four signal end pin, and wherein: Va, Vb are two analog input signal ends, and CTL is the input control signal end, and out is the comparison output signal end.
The working range of comparator of the present invention can reach 0～VDD, this is because input signal has been finished the subtraction of two input signals in input capacitance, then the result of subtraction is delivered in the amplifier and amplify, two signals having avoided directly will comparing are directly delivered to the input of amplifier, thereby have increased the working range of circuit.
Because the amplification coefficient of level Four inverter circuit is very big, so the resolution of this comparator is very high, can reach 2mv.
The frequency of comparator of the present invention is by circuit reset time and relatively required time decision of circuit.Required time is long more, and operating frequency is more little.The operating frequency of comparator of the present invention can reach more than the 50MHZ than higher.
List of references:
" Wide band territory DS-CDMA ベ one ス バ Application De handling part low consumption electrification technology " p53-74, Shou Guoliang, 1998
Claims (6)
1. one kind is the voltage comparator of elementary cell with the neuron circuit, it is characterized in that it comprises:
One has the alternative circuit of two inputs and a control end, is used to one of two input signals of selecting by comparator;
One input capacitance, the output of one termination alternative circuit, it is used to finish the subtraction of two input signals of comparator;
One inverter circuit, its input connects the other end of input capacitance, and it is used for the difference of two input signals of comparator is amplified;
One electronic switch, its switch ends connect input, the output of inverter circuit respectively, the control end of its control termination alternative circuit, and it is used for setting up or cut off feedback loop between the output input of inverter circuit.
2. as claimed in claim 1 is the voltage comparator of elementary cell with the neuron circuit, it is characterized in that: described alternative circuit is made of two electronic switches, one end of two electronic switches is respectively one of two inputs of alternative circuit, the other end of two electronic switches also connects, as the output of alternative circuit.
3. as claimed in claim 1 or 2 is the voltage comparator of elementary cell with the neuron circuit, it is characterized in that: described electronic switch is made of a nmos pass transistor, a PMOS transistor and an inverter, the source electrode of two transistor and drain electrode butt joint respectively, respectively as the two ends of electronic switch, inverter is connected between the grid of two transistor, and the input of inverter is as the control end of electronic switch.
4. as claimed in claim 1 is the voltage comparator of elementary cell with the neuron circuit, it is characterized in that: described inverter circuit is made of a nmos pass transistor, a PMOS transistor, the grid of two transistor also connects, input as inverter circuit, the drain electrode of two transistor also connects, as the output of inverter circuit.
5. as claimed in claim 1 is the voltage comparator of elementary cell with the neuron circuit, and it is characterized in that: the output of described inverter circuit is connected in series the one-level amplifier at least.
6. as claimed in claim 5 is the comparator of elementary cell with the neuron circuit, it is characterized in that: described amplifier is an inverter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144900 CN1428934A (en) | 2001-12-28 | 2001-12-28 | Voltage comparator using neuron circuit as basic unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144900 CN1428934A (en) | 2001-12-28 | 2001-12-28 | Voltage comparator using neuron circuit as basic unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1428934A true CN1428934A (en) | 2003-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01144900 Pending CN1428934A (en) | 2001-12-28 | 2001-12-28 | Voltage comparator using neuron circuit as basic unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978844A (en) * | 2015-06-30 | 2015-10-14 | 成都众山科技有限公司 | Wireless industrial liquid level transmitter |
| CN105067131A (en) * | 2015-06-30 | 2015-11-18 | 成都众山科技有限公司 | Wireless temperature transmitter with hybrid power supply |
| CN105787291A (en) * | 2016-01-29 | 2016-07-20 | 西安交通大学 | Circuit for realizing Morris-Lecar neuron model by simulation |
| CN109635943A (en) * | 2018-12-13 | 2019-04-16 | 中山大学 | Numerical model analysis neuron circuit |
-
2001
- 2001-12-28 CN CN 01144900 patent/CN1428934A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978844A (en) * | 2015-06-30 | 2015-10-14 | 成都众山科技有限公司 | Wireless industrial liquid level transmitter |
| CN105067131A (en) * | 2015-06-30 | 2015-11-18 | 成都众山科技有限公司 | Wireless temperature transmitter with hybrid power supply |
| CN105787291A (en) * | 2016-01-29 | 2016-07-20 | 西安交通大学 | Circuit for realizing Morris-Lecar neuron model by simulation |
| CN109635943A (en) * | 2018-12-13 | 2019-04-16 | 中山大学 | Numerical model analysis neuron circuit |
| CN109635943B (en) * | 2018-12-13 | 2022-03-18 | 佛山眼图科技有限公司 | Digital-analog hybrid neuron circuit |
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