JPS5582540A - Analog digital conversion unit - Google Patents
Analog digital conversion unitInfo
- Publication number
- JPS5582540A JPS5582540A JP15836078A JP15836078A JPS5582540A JP S5582540 A JPS5582540 A JP S5582540A JP 15836078 A JP15836078 A JP 15836078A JP 15836078 A JP15836078 A JP 15836078A JP S5582540 A JPS5582540 A JP S5582540A
- Authority
- JP
- Japan
- Prior art keywords
- output line
- converter
- conversion unit
- digital conversion
- analog digital
- 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
Abstract
PURPOSE: To enable A/D conversion of high accuracy, by correcting the zero point variation with a simple circuit constitution, when analog signal is converted into digital signal.
CONSTITUTION: The common output line 9 of the input selection switching circuit 4 which selectively picks up the analog input signals 2, 3 and zero signal 1 is coupled to the A/D converter 11 via the DC amplifier 10. Further, since the output line 14 of the register 13 holding the data obtained from the A/D converter 11 and the output line 12 of the A/D converter 11 are coupled to the digital subtraction circuit 15, the measuring data corrected for zero point variation is obtained on the output line 16 of the digital subtraction circuit 15.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15836078A JPS5582540A (en) | 1978-12-19 | 1978-12-19 | Analog digital conversion unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15836078A JPS5582540A (en) | 1978-12-19 | 1978-12-19 | Analog digital conversion unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5582540A true JPS5582540A (en) | 1980-06-21 |
Family
ID=15669963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15836078A Pending JPS5582540A (en) | 1978-12-19 | 1978-12-19 | Analog digital conversion unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5582540A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0645942A (en) * | 1991-06-21 | 1994-02-18 | Crystal Semiconductor Corp | Ratio analog-to-digital converter correcting non-ratio offset |
JP2000134096A (en) * | 1998-10-27 | 2000-05-12 | Nec Corp | Successive comparison type a/d converter |
JP2012039194A (en) * | 2010-08-03 | 2012-02-23 | Sharp Corp | A/d converter, solid-state image pickup device and electronic information apparatus |
-
1978
- 1978-12-19 JP JP15836078A patent/JPS5582540A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0645942A (en) * | 1991-06-21 | 1994-02-18 | Crystal Semiconductor Corp | Ratio analog-to-digital converter correcting non-ratio offset |
JP2000134096A (en) * | 1998-10-27 | 2000-05-12 | Nec Corp | Successive comparison type a/d converter |
JP2012039194A (en) * | 2010-08-03 | 2012-02-23 | Sharp Corp | A/d converter, solid-state image pickup device and electronic information apparatus |
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