JPS55166334A - Analog-digital converter - Google Patents
Analog-digital converterInfo
- Publication number
- JPS55166334A JPS55166334A JP7357879A JP7357879A JPS55166334A JP S55166334 A JPS55166334 A JP S55166334A JP 7357879 A JP7357879 A JP 7357879A JP 7357879 A JP7357879 A JP 7357879A JP S55166334 A JPS55166334 A JP S55166334A
- Authority
- JP
- Japan
- Prior art keywords
- point
- voltage
- rises
- resistances
- delivered
- 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
- 238000006243 chemical reaction Methods 0.000 abstract 1
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE: To ensure the several A/D conversions requiring the different accuracy with one unit of A/D converter, by switching the voltage level of the digital value to be supplied to the D/A converting part with the control signal of the multiplexer.
CONSTITUTION: With selection of analog sensors 1a∼1d each, resistances 18a∼18d are set so that the potential of point Q may be -1∼-4V each. The value of resistances 13a∼13d are set to R, R/2, R/4 and R/8 each. And at first output 20 arithmetic circuit 2B is set to 1 with other outputs set to 0 respectively. As a result, transistor 8a is turned off. And the voltage of output point 0 of amplifier 6 becomes V/16 when the voltage of point Q is -1V with resistance 12 set to R/16 each. Then outputs 21∼23 are delivered in sequence and in the binary number, and thus the voltage of point P rises up by V/16. The voltage of point Q selects sensor 1b to become -2V, and then outpts 20∼23 are delivered in sequence. Thus the voltage of point P rises up by V/8. After this, the voltage of point P rises up by V/16 or V/4 in accordance with the voltage of point Q.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7357879A JPS55166334A (en) | 1979-06-13 | 1979-06-13 | Analog-digital converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7357879A JPS55166334A (en) | 1979-06-13 | 1979-06-13 | Analog-digital converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55166334A true JPS55166334A (en) | 1980-12-25 |
Family
ID=13522308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7357879A Pending JPS55166334A (en) | 1979-06-13 | 1979-06-13 | Analog-digital converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55166334A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6064524A (en) * | 1983-08-02 | 1985-04-13 | シ−メンス、アクチエンゲゼルシヤフト | Integrated semiconductor circuit |
| JPS60149254U (en) * | 1983-11-18 | 1985-10-03 | オリンパス光学工業株式会社 | DA converter for display calculation of exposure parameters in camera |
| JPS61163721A (en) * | 1985-01-14 | 1986-07-24 | Fuji Electric Co Ltd | Analog input system |
| JPS6355634U (en) * | 1986-09-29 | 1988-04-14 |
-
1979
- 1979-06-13 JP JP7357879A patent/JPS55166334A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6064524A (en) * | 1983-08-02 | 1985-04-13 | シ−メンス、アクチエンゲゼルシヤフト | Integrated semiconductor circuit |
| JPS60149254U (en) * | 1983-11-18 | 1985-10-03 | オリンパス光学工業株式会社 | DA converter for display calculation of exposure parameters in camera |
| JPS61163721A (en) * | 1985-01-14 | 1986-07-24 | Fuji Electric Co Ltd | Analog input system |
| JPS6355634U (en) * | 1986-09-29 | 1988-04-14 |
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