JPS5534536A - Digital-analog converter - Google Patents
Digital-analog converterInfo
- Publication number
- JPS5534536A JPS5534536A JP10667578A JP10667578A JPS5534536A JP S5534536 A JPS5534536 A JP S5534536A JP 10667578 A JP10667578 A JP 10667578A JP 10667578 A JP10667578 A JP 10667578A JP S5534536 A JPS5534536 A JP S5534536A
- Authority
- JP
- Japan
- Prior art keywords
- current
- circuit
- source
- division
- ifs
- 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 decrease the width of the supply power source of the D/A converter by connecting the 2-split D/A converters in parallel via the current Miller circuit.
CONSTITUTION: The 1st current division circuit 31, which carries out the segment division, consists of current source 33-n to divide current IFS of constant current source 32 into IFS/2n (n=1∼6), current source 33-7 of IFS/64 and change-over switch S-n provided in accordance with each source 33-n. If the current division ratio of circuit 31 is set to (a), current IS1 of line 34 becomes equal to aIFS. For current Miller circuit 20, current IS which is equal to current IS1 flown to terminal 27 flows to terminal 28. And if division ratio of 2nd current division circuit 35 featuring the same structure as circuit 31 is set to (b), the output current of 2nd D/A converter is obtained as abIFS since the current of line 36 is aIFS. Thus the same function is obtained as that in which two D/A conversion circuit parts are piled on each other, thus decreasing the power source width down to 1/2.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10667578A JPS5534536A (en) | 1978-08-31 | 1978-08-31 | Digital-analog converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10667578A JPS5534536A (en) | 1978-08-31 | 1978-08-31 | Digital-analog converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5534536A true JPS5534536A (en) | 1980-03-11 |
Family
ID=14439636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10667578A Pending JPS5534536A (en) | 1978-08-31 | 1978-08-31 | Digital-analog converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5534536A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59186416A (en) * | 1983-04-08 | 1984-10-23 | Hitachi Micro Comput Eng Ltd | Converting circuit |
JPS59193618A (en) * | 1983-04-18 | 1984-11-02 | Hitachi Ltd | Digital-analog converting system |
US6310568B1 (en) | 1999-11-24 | 2001-10-30 | Mitsubishi Denki Kabushiki Kaisha | Digital-to-analog conversion circuit |
US7173553B2 (en) | 2004-09-29 | 2007-02-06 | Matsushita Electric Industrial Co., Ltd. | Current summing digital-to-analog converter |
-
1978
- 1978-08-31 JP JP10667578A patent/JPS5534536A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59186416A (en) * | 1983-04-08 | 1984-10-23 | Hitachi Micro Comput Eng Ltd | Converting circuit |
JPH0362056B2 (en) * | 1983-04-08 | 1991-09-24 | Hitachi Maikuro Konpyuuta Enjiniaringu Kk | |
JPS59193618A (en) * | 1983-04-18 | 1984-11-02 | Hitachi Ltd | Digital-analog converting system |
US6310568B1 (en) | 1999-11-24 | 2001-10-30 | Mitsubishi Denki Kabushiki Kaisha | Digital-to-analog conversion circuit |
US7173553B2 (en) | 2004-09-29 | 2007-02-06 | Matsushita Electric Industrial Co., Ltd. | Current summing digital-to-analog converter |
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