JPS57202117A - Chopper type mos comparator - Google Patents
Chopper type mos comparatorInfo
- Publication number
- JPS57202117A JPS57202117A JP8764381A JP8764381A JPS57202117A JP S57202117 A JPS57202117 A JP S57202117A JP 8764381 A JP8764381 A JP 8764381A JP 8764381 A JP8764381 A JP 8764381A JP S57202117 A JPS57202117 A JP S57202117A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- switch
- switches
- chopper type
- point
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
- H03K5/24—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
- H03K5/2472—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude using field effect transistors
- H03K5/249—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude using field effect transistors using clock signals
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE:To detect a minute voltage difference, by constituting a chopper type comparator through the use of a C-MOS differential amplifier. CONSTITUTION:A reference voltage Vr and an input voltage Vs are applied to one terminal (a) of a coupling capacitor 18 via switches 15 and 16. Another end of the capacitor 18 is connected to a positive input terminal of a C-MOS differential amplifier 20, a voltage at a point (i) is applied via switch 13, a negative input terminal is grounded via a capacitor 19 and a switch 11 is connected between a negative input terminal and an output terminal (d). When the switches 11, 13 and 15 turn on, voltages at connecting points (b), (c) and (d) are equal to the voltage at the connecting point (i). When the switch 15 turns off and the switch 16 turns on after the switches 11 and 13 turn off, a voltage at the point (b) changes by the difference between the input voltage Vs and the reference voltage Vr and the output changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8764381A JPS57202117A (en) | 1981-06-08 | 1981-06-08 | Chopper type mos comparator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8764381A JPS57202117A (en) | 1981-06-08 | 1981-06-08 | Chopper type mos comparator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57202117A true JPS57202117A (en) | 1982-12-10 |
Family
ID=13920659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8764381A Pending JPS57202117A (en) | 1981-06-08 | 1981-06-08 | Chopper type mos comparator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57202117A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61196614A (en) * | 1985-02-26 | 1986-08-30 | Mitsubishi Electric Corp | Chopper type comparator |
| JPS62291217A (en) * | 1986-06-11 | 1987-12-18 | Fujitsu Ltd | Comparator circuit |
-
1981
- 1981-06-08 JP JP8764381A patent/JPS57202117A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61196614A (en) * | 1985-02-26 | 1986-08-30 | Mitsubishi Electric Corp | Chopper type comparator |
| JPS62291217A (en) * | 1986-06-11 | 1987-12-18 | Fujitsu Ltd | Comparator circuit |
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