JPS6442923A - Analog/digital conversion circuit - Google Patents
Analog/digital conversion circuitInfo
- Publication number
- JPS6442923A JPS6442923A JP19954487A JP19954487A JPS6442923A JP S6442923 A JPS6442923 A JP S6442923A JP 19954487 A JP19954487 A JP 19954487A JP 19954487 A JP19954487 A JP 19954487A JP S6442923 A JPS6442923 A JP S6442923A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- subtraction
- voltage generating
- voltage
- analog
- 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.)
- Granted
Links
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To contrive the reduction of the power consumption with a simple constitution by giving a specific voltage obtained from a subtraction voltage generating circuit to the 2nd subtraction input terminal of a subtraction circuit composed of an operational amplifier circuit. CONSTITUTION:The subtraction circuit 9 consists of an operational amplifier circuit having a differential amplifier circuit 11 having a gain G (G is a number of >=1) and a voltage being a value of G/(1+G)-fold of a voltage represented by a digital signal D1 obtained from an analog/digital conversion circuit 3 is given to a subtraction input terminal 10B of the subtraction circuit 9 via a subtraction voltage generating circuit 7. Moreover, the subtraction voltage generating circuit 7 consists of a subtraction voltage generating resistance division circuit 31 and a switch circuit 32. Thus, a digital analog conversion circuit being the same as that in a conventional circuit is not required, the constitution is made simple and large power consumption is not needed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62199544A JP2589318B2 (en) | 1987-08-10 | 1987-08-10 | Analog / digital conversion circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62199544A JP2589318B2 (en) | 1987-08-10 | 1987-08-10 | Analog / digital conversion circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6442923A true JPS6442923A (en) | 1989-02-15 |
JP2589318B2 JP2589318B2 (en) | 1997-03-12 |
Family
ID=16409592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62199544A Expired - Fee Related JP2589318B2 (en) | 1987-08-10 | 1987-08-10 | Analog / digital conversion circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2589318B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57181226A (en) * | 1981-04-30 | 1982-11-08 | Nec Corp | Analog-to-digital converter |
JPS58206228A (en) * | 1982-05-27 | 1983-12-01 | Nippon Denso Co Ltd | Analog-digital converter |
-
1987
- 1987-08-10 JP JP62199544A patent/JP2589318B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57181226A (en) * | 1981-04-30 | 1982-11-08 | Nec Corp | Analog-to-digital converter |
JPS58206228A (en) * | 1982-05-27 | 1983-12-01 | Nippon Denso Co Ltd | Analog-digital converter |
Also Published As
Publication number | Publication date |
---|---|
JP2589318B2 (en) | 1997-03-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |