Data converter |
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| 申请号 | JP10593082 | 申请日 | 1982-06-18 | 公开(公告)号 | JPS58222615A | 公开(公告)日 | 1983-12-24 |
| 申请人 | Matsushita Electric Ind Co Ltd; | 发明人 | YAMAGUCHI KAZUFUMI; NAKAGAWA ATSUSHI; YAMASHITA ICHIROU; | ||||
| 摘要 | PURPOSE:To speed up the titled converter, by providing two systems of output terminals as analog current output terminals of a D/A converter in providing A/D, D/A mode switching function, for switching the modes without using an analog switch. CONSTITUTION:The D/A converter 19 has two output terminals 17, 18 with no mutual interference. Further, when a mode selecting terminal is ''L'', a serial digital signal inputted from a digital input terminal 24 is inputted to a successive comparison register 21, converted into a parallel data, inputted to the D/A converter 19, outputted to an analog output terminal 26 from an output terminal 17 via an operational amplifier 25, and the D/A conversion is done. When the state of a terminal 23 is ''H'' inversely, a switch 22 passes a signal comparing a voltage depending on a current flowing from an analog input terminal 27 to the output terminal of the D/A converter 19 and a ground potential, through a successive comparison register, the signal is converted successively and outputted to a parallel digital output terminal 30 for the A/D conversion. | ||||||
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| 说明书全文 | |||||||
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