JPS6416024A - Offset correction type analog/digital converter - Google Patents
Offset correction type analog/digital converterInfo
- Publication number
- JPS6416024A JPS6416024A JP17138387A JP17138387A JPS6416024A JP S6416024 A JPS6416024 A JP S6416024A JP 17138387 A JP17138387 A JP 17138387A JP 17138387 A JP17138387 A JP 17138387A JP S6416024 A JPS6416024 A JP S6416024A
- Authority
- JP
- Japan
- Prior art keywords
- output
- offset
- converter
- digital converter
- offset correction
- 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
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To eliminate an offset by detecting the mean level of output of an A/D (analog digital)converter, and subtracting the value from the A/D converter. CONSTITUTION:The A/D converter 1 converts an analog input VIN into a digital signal DAD, a means level detector 2 receives the digital signal DAD to output its mean level DAU and a subtractor 3 obtains the difference between the digital signal DAD and the mean level DAU. Thus, the output of the subtraction means is used as the A/D conversion output to decrease the offset level of the digital output DO without being affected by the offset of the analog part such as a comparator and the ADC.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17138387A JPS6416024A (en) | 1987-07-09 | 1987-07-09 | Offset correction type analog/digital converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17138387A JPS6416024A (en) | 1987-07-09 | 1987-07-09 | Offset correction type analog/digital converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6416024A true JPS6416024A (en) | 1989-01-19 |
Family
ID=15922159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17138387A Pending JPS6416024A (en) | 1987-07-09 | 1987-07-09 | Offset correction type analog/digital converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6416024A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0479523A (en) * | 1990-07-20 | 1992-03-12 | Fujitsu Ltd | Offset compensation system for pcm channel unit |
EP0483846A2 (en) * | 1990-11-02 | 1992-05-06 | Nec Corporation | Analog-to-digital converter circuit |
EP0589749A1 (en) * | 1992-09-25 | 1994-03-30 | Thomson-Csf | Analog-digital encoding circuit with zero-offset compensation |
WO2004079275A1 (en) | 2003-03-05 | 2004-09-16 | Matsushita Electric Industrial Co., Ltd. | Heating device and sanitary washing device using the same |
JP2007317578A (en) * | 2006-05-27 | 2007-12-06 | Sanyo Electric Co Ltd | Battery pack |
JP2007317579A (en) * | 2006-05-27 | 2007-12-06 | Sanyo Electric Co Ltd | Battery pack |
JP2011172119A (en) * | 2010-02-19 | 2011-09-01 | Sony Corp | Solid-state image pickup device and camera system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57203322A (en) * | 1981-06-10 | 1982-12-13 | Matsushita Electric Ind Co Ltd | Eliminating device of dc component |
JPS60145729A (en) * | 1984-01-09 | 1985-08-01 | Matsushita Electric Ind Co Ltd | Signal clamping method |
-
1987
- 1987-07-09 JP JP17138387A patent/JPS6416024A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57203322A (en) * | 1981-06-10 | 1982-12-13 | Matsushita Electric Ind Co Ltd | Eliminating device of dc component |
JPS60145729A (en) * | 1984-01-09 | 1985-08-01 | Matsushita Electric Ind Co Ltd | Signal clamping method |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0479523A (en) * | 1990-07-20 | 1992-03-12 | Fujitsu Ltd | Offset compensation system for pcm channel unit |
EP0483846A2 (en) * | 1990-11-02 | 1992-05-06 | Nec Corporation | Analog-to-digital converter circuit |
EP0589749A1 (en) * | 1992-09-25 | 1994-03-30 | Thomson-Csf | Analog-digital encoding circuit with zero-offset compensation |
WO2004079275A1 (en) | 2003-03-05 | 2004-09-16 | Matsushita Electric Industrial Co., Ltd. | Heating device and sanitary washing device using the same |
JP2007317578A (en) * | 2006-05-27 | 2007-12-06 | Sanyo Electric Co Ltd | Battery pack |
JP2007317579A (en) * | 2006-05-27 | 2007-12-06 | Sanyo Electric Co Ltd | Battery pack |
JP2011172119A (en) * | 2010-02-19 | 2011-09-01 | Sony Corp | Solid-state image pickup device and camera system |
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