JPS5585136A - Digital-analog converter - Google Patents
Digital-analog converterInfo
- Publication number
- JPS5585136A JPS5585136A JP15977378A JP15977378A JPS5585136A JP S5585136 A JPS5585136 A JP S5585136A JP 15977378 A JP15977378 A JP 15977378A JP 15977378 A JP15977378 A JP 15977378A JP S5585136 A JPS5585136 A JP S5585136A
- Authority
- JP
- Japan
- Prior art keywords
- digital
- current
- vcc
- binary weighted
- circuit
- 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 establish the D/A converter low in cost and highly accurate using the digital signal drive circuit and the ladder resistance network which can be constituted with low cost digital IC and discrete components.
CONSTITUTION: The digital signal drive circuit 5 using digital IC is driven with the digital inputs b0∼bn taking b0 as the maximum bit and bn as the minimum bit, and binary weighted current is produced to the binary weighted current generator 1' from the binary weighted resistors R∼2nR with n+1 sets constituting the ladder resistor network 1, the output current is fed to the operational amplifier 2 and the output E0 is produced by holding the voltage level of the circuit 1'∼VCC with the voltage VCC being another input. In IC circuit 5, the voltage level of the current output terminal is kept at voltage VCC at all times, current flows to the resistor 1 only when IC is selected to ground, and when selected to VCC side, no current flows and it is not subjected to the effect of the internal resistor Rd.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15977378A JPS5585136A (en) | 1978-12-22 | 1978-12-22 | Digital-analog converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15977378A JPS5585136A (en) | 1978-12-22 | 1978-12-22 | Digital-analog converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5585136A true JPS5585136A (en) | 1980-06-26 |
Family
ID=15700940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15977378A Pending JPS5585136A (en) | 1978-12-22 | 1978-12-22 | Digital-analog converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5585136A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58148516A (en) * | 1982-02-23 | 1983-09-03 | バア−−ブラウン・リサ−チ・コ−ポレ−シヨン | Adjustable resistance magnifying circuit adapted for digital-to-analog converter |
| JPH0228145U (en) * | 1988-08-12 | 1990-02-23 | ||
| JPH05284028A (en) * | 1992-04-06 | 1993-10-29 | Fujitsu Ltd | D/a converter |
-
1978
- 1978-12-22 JP JP15977378A patent/JPS5585136A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58148516A (en) * | 1982-02-23 | 1983-09-03 | バア−−ブラウン・リサ−チ・コ−ポレ−シヨン | Adjustable resistance magnifying circuit adapted for digital-to-analog converter |
| JPH041529B2 (en) * | 1982-02-23 | 1992-01-13 | Burr Brown Corp | |
| JPH0228145U (en) * | 1988-08-12 | 1990-02-23 | ||
| JPH05284028A (en) * | 1992-04-06 | 1993-10-29 | Fujitsu Ltd | D/a converter |
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