JPS56146327A - Output error compensating circuit for digital-to-analog converter - Google Patents
Output error compensating circuit for digital-to-analog converterInfo
- Publication number
- JPS56146327A JPS56146327A JP5008880A JP5008880A JPS56146327A JP S56146327 A JPS56146327 A JP S56146327A JP 5008880 A JP5008880 A JP 5008880A JP 5008880 A JP5008880 A JP 5008880A JP S56146327 A JPS56146327 A JP S56146327A
- Authority
- JP
- Japan
- Prior art keywords
- output
- resistance
- circuit
- digital
- digital signal
- 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
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To realize a compensation for the conversion output error, by extracting the digital signal when the D/A conversion output shows the discontinuity and then adding and subtracting this digital signal to/from the analog signal. CONSTITUTION:The bit output of the digital signal output device 11 is supplied to the switching circuit 12. The circuit 12 switches selectively the reference level Vref and the earth level in correspondence to the digital input. The resistance of the ladder resistance circuit 13 is connected in correspondence to each bit output of the circuit 12, and this output is applied to the operational amplifier 14. On the other hand, the most significant bit MSB of the device 11 is applied to both ends of the variable resistance 20 via the buffer 18 and inverter 19. The DC component of the output of the resistance 20 is eliminated by the capacitor 20, and the output of the resistance 20 is applied to the minus terminal of the operational amplifier 16 to be added or subtracted to/from the output of the amplifier 14. In such way, the discontinuity can be compensated for the analog output of a D/A converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5008880A JPS56146327A (en) | 1980-04-15 | 1980-04-15 | Output error compensating circuit for digital-to-analog converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5008880A JPS56146327A (en) | 1980-04-15 | 1980-04-15 | Output error compensating circuit for digital-to-analog converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56146327A true JPS56146327A (en) | 1981-11-13 |
Family
ID=12849278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5008880A Pending JPS56146327A (en) | 1980-04-15 | 1980-04-15 | Output error compensating circuit for digital-to-analog converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56146327A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5973844U (en) * | 1982-11-08 | 1984-05-19 | 日本コロムビア株式会社 | Conversion error correction circuit for digital-to-analog converter |
| JPS59106229U (en) * | 1983-01-06 | 1984-07-17 | 日本電気株式会社 | resampler |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5232657A (en) * | 1975-09-09 | 1977-03-12 | Fujitsu Ltd | Digital-analog converter |
-
1980
- 1980-04-15 JP JP5008880A patent/JPS56146327A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5232657A (en) * | 1975-09-09 | 1977-03-12 | Fujitsu Ltd | Digital-analog converter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5973844U (en) * | 1982-11-08 | 1984-05-19 | 日本コロムビア株式会社 | Conversion error correction circuit for digital-to-analog converter |
| JPS59106229U (en) * | 1983-01-06 | 1984-07-17 | 日本電気株式会社 | resampler |
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