JPS6465929A - Current output type d/a converter - Google Patents
Current output type d/a converterInfo
- Publication number
- JPS6465929A JPS6465929A JP22243587A JP22243587A JPS6465929A JP S6465929 A JPS6465929 A JP S6465929A JP 22243587 A JP22243587 A JP 22243587A JP 22243587 A JP22243587 A JP 22243587A JP S6465929 A JPS6465929 A JP S6465929A
- Authority
- JP
- Japan
- Prior art keywords
- logical
- output
- binary code
- gates
- inputted
- 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 reduce the error of an output current to be generated when a most significant bit changes its logical level, in case of a binary code is monotonically increased by providing plural constant current sources, which output as taking a partial charge, the output current corresponding to the most significant bit, for the most significant bit, at least, of the inputted binary code. CONSTITUTION:An OR circuit 4 and an AND circuit 5 take respectively the logical sum and the logical product of the bits D2, D3 of the binary code to be inputted, and determine the logical levels of node A0, A2. The logical level of the bit D3 is impressed to the node A1. Switching transistors(TR) 10, 11 input respectively bits D0, D1 to their gates, and the gates of the switching TRs 12-14 are respectively connected to the nodes A0, A1, A2. Respective output currents of the constant current sources 20-24 are respectively outputted to an output terminal 3 when the gates of the switching TRs 10-14 come to the logical level 1, and make the output current IOUT. Thus, the constant current sources 24-20, whose output currents are switched and outputted when the logical level '0' of the respective bits D3-D0 of the binary code to be inputted change into the logical '1', are usable even if they are small-sized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22243587A JPS6465929A (en) | 1987-09-04 | 1987-09-04 | Current output type d/a converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22243587A JPS6465929A (en) | 1987-09-04 | 1987-09-04 | Current output type d/a converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6465929A true JPS6465929A (en) | 1989-03-13 |
Family
ID=16782350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22243587A Pending JPS6465929A (en) | 1987-09-04 | 1987-09-04 | Current output type d/a converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6465929A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017516389A (en) * | 2014-04-14 | 2017-06-15 | シーラス ロジック, インコーポレイテッドCirrus Logic, Inc. | Switchable secondary playback path |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5780827A (en) * | 1980-11-10 | 1982-05-20 | Matsushita Electric Ind Co Ltd | Digital-analogue converter |
| JPS58168326A (en) * | 1982-03-29 | 1983-10-04 | Sanyo Electric Co Ltd | Da converter |
-
1987
- 1987-09-04 JP JP22243587A patent/JPS6465929A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5780827A (en) * | 1980-11-10 | 1982-05-20 | Matsushita Electric Ind Co Ltd | Digital-analogue converter |
| JPS58168326A (en) * | 1982-03-29 | 1983-10-04 | Sanyo Electric Co Ltd | Da converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017516389A (en) * | 2014-04-14 | 2017-06-15 | シーラス ロジック, インコーポレイテッドCirrus Logic, Inc. | Switchable secondary playback path |
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