JPS5619227A - A/d converter - Google Patents
A/d converterInfo
- Publication number
- JPS5619227A JPS5619227A JP9374479A JP9374479A JPS5619227A JP S5619227 A JPS5619227 A JP S5619227A JP 9374479 A JP9374479 A JP 9374479A JP 9374479 A JP9374479 A JP 9374479A JP S5619227 A JPS5619227 A JP S5619227A
- Authority
- JP
- Japan
- Prior art keywords
- converter
- bit
- voltage
- bits
- processes
- 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 decrease the number of the high-accuracy component parts used, by using several times the D/A converter having a smaller number of bits than that required for the A/D converter and thus obtaining a prescribed number of coded bits.
CONSTITUTION: Analog input voltage Va of terminal 1 reaches voltage comparator 2 through the solid-line routes of switch 5. Under these conditions, the processes are given to the 1st bit to the 3rd bit to store voltage Va into temporary memory circuit 6 when these processes are over. Then the analog voltage (output voltage of D/A converter 3) is held 7 when the 3rd bit is finished and then subtracted at 8 from Va. This result of subtraction is amplified at 9 up to full-scale voltage VFS [the gain is enough with 8 (18dB) since converter 3 has 3 bits]. After this, switch 5 is changed over to the position shown by the dotted lines, and the processes are carried out successively by comparing register 4 and converter 3 for the 4th to 6th bits. This redult of process is stored in temporary memory circuit 10. Thus a 6-bit A/D converter is obtained by using 3-bit D/A converter 3 twice and repetitively.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9374479A JPS5619227A (en) | 1979-07-25 | 1979-07-25 | A/d converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9374479A JPS5619227A (en) | 1979-07-25 | 1979-07-25 | A/d converter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5619227A true JPS5619227A (en) | 1981-02-23 |
JPS6243571B2 JPS6243571B2 (en) | 1987-09-16 |
Family
ID=14090920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9374479A Granted JPS5619227A (en) | 1979-07-25 | 1979-07-25 | A/d converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5619227A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58167971A (en) * | 1982-03-29 | 1983-10-04 | Toshiba Corp | Digital type maximum/minimum detection circuit |
JPS5999541U (en) * | 1982-12-23 | 1984-07-05 | 富士電機株式会社 | A/D conversion device |
JPS59159035U (en) * | 1983-04-12 | 1984-10-25 | 株式会社ケンウッド | D/A converter |
JPS6029027A (en) * | 1983-07-21 | 1985-02-14 | Nakamichi Corp | Signal converting circuit |
JPH02209019A (en) * | 1989-01-20 | 1990-08-20 | John Fluke Mfg Co Inc | Input signal easuring method and device and analog digital connecting circuit |
WO2002011290A1 (en) * | 2000-07-27 | 2002-02-07 | Hamamatsu Photonics K.K. | A/d converter and solid-state camera |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5242057A (en) * | 1975-09-30 | 1977-04-01 | Toshiba Corp | A-d convertor |
JPS5387660A (en) * | 1977-01-12 | 1978-08-02 | Hitachi Ltd | Multi-channel digital-analogue converter unit |
-
1979
- 1979-07-25 JP JP9374479A patent/JPS5619227A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5242057A (en) * | 1975-09-30 | 1977-04-01 | Toshiba Corp | A-d convertor |
JPS5387660A (en) * | 1977-01-12 | 1978-08-02 | Hitachi Ltd | Multi-channel digital-analogue converter unit |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58167971A (en) * | 1982-03-29 | 1983-10-04 | Toshiba Corp | Digital type maximum/minimum detection circuit |
JPH0338779B2 (en) * | 1982-03-29 | 1991-06-11 | Tokyo Shibaura Electric Co | |
JPS5999541U (en) * | 1982-12-23 | 1984-07-05 | 富士電機株式会社 | A/D conversion device |
JPS59159035U (en) * | 1983-04-12 | 1984-10-25 | 株式会社ケンウッド | D/A converter |
JPS6029027A (en) * | 1983-07-21 | 1985-02-14 | Nakamichi Corp | Signal converting circuit |
JPH02209019A (en) * | 1989-01-20 | 1990-08-20 | John Fluke Mfg Co Inc | Input signal easuring method and device and analog digital connecting circuit |
WO2002011290A1 (en) * | 2000-07-27 | 2002-02-07 | Hamamatsu Photonics K.K. | A/d converter and solid-state camera |
JP2002043941A (en) * | 2000-07-27 | 2002-02-08 | Hamamatsu Photonics Kk | Analog/digital converter and solid-state image pickup device |
US6670903B2 (en) | 2000-07-27 | 2003-12-30 | Hamamatsu Photonics K.K. | A/D converter and solid-state camera |
JP4489914B2 (en) * | 2000-07-27 | 2010-06-23 | 浜松ホトニクス株式会社 | A / D converter and solid-state imaging device |
Also Published As
Publication number | Publication date |
---|---|
JPS6243571B2 (en) | 1987-09-16 |
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