JPS6419829A - Sequential comparing type a/d converting circuit - Google Patents
Sequential comparing type a/d converting circuitInfo
- Publication number
- JPS6419829A JPS6419829A JP17470787A JP17470787A JPS6419829A JP S6419829 A JPS6419829 A JP S6419829A JP 17470787 A JP17470787 A JP 17470787A JP 17470787 A JP17470787 A JP 17470787A JP S6419829 A JPS6419829 A JP S6419829A
- Authority
- JP
- Japan
- Prior art keywords
- comparing
- sampling
- input voltage
- analog input
- significant bit
- 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 improve the charging rate of an analog input voltage to the capacity of a sampling without deteriorating converting accuracy by respectively individually providing chopper type comparators for comparing the most significant bit and for comparing a second and subsequent bits and executing the comparing operation of a former and the sampling operation of a latter in parallel. CONSTITUTION:During the comparison and the operation of the most significant bit, an analog input voltage Vin for comparing the second and subsequent bits is previously sampled and started in a sampling capacity 8 holed with a second chopper type comparator 2. At the time t3 in the vicinity of completing the comparing operation of the most significant bit, when a sampling period for comparing the second and subsequent bits is completed, the comparison operation of the second bit at a comparatively early time t4 succeeding thereto can be started. Thereby, the charging rate of the analog input voltage Vin to the sampling capacity 8 can be improved without lowering the converting accuracy or the converting speed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17470787A JPS6419829A (en) | 1987-07-15 | 1987-07-15 | Sequential comparing type a/d converting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17470787A JPS6419829A (en) | 1987-07-15 | 1987-07-15 | Sequential comparing type a/d converting circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6419829A true JPS6419829A (en) | 1989-01-23 |
Family
ID=15983249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17470787A Pending JPS6419829A (en) | 1987-07-15 | 1987-07-15 | Sequential comparing type a/d converting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6419829A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0334725A (en) * | 1989-06-30 | 1991-02-14 | Nec Corp | Analog/digital converter |
JP2012068074A (en) * | 2010-09-22 | 2012-04-05 | New Japan Radio Co Ltd | Voltage range detecting device |
JP2015041896A (en) * | 2013-08-22 | 2015-03-02 | 株式会社東芝 | A/d converter |
-
1987
- 1987-07-15 JP JP17470787A patent/JPS6419829A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0334725A (en) * | 1989-06-30 | 1991-02-14 | Nec Corp | Analog/digital converter |
JP2012068074A (en) * | 2010-09-22 | 2012-04-05 | New Japan Radio Co Ltd | Voltage range detecting device |
JP2015041896A (en) * | 2013-08-22 | 2015-03-02 | 株式会社東芝 | A/d converter |
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