Title:
DIGITAL-ANALOG CONVERSION CIRCUIT
Document Type and Number:
Japanese Patent JPH0637640
Kind Code:
A
Abstract:
PURPOSE: To obtain a D/A conversion circuit in which whether a D/A conversion output is outputted through a buffer amplifier or directly outputted can be selected according to an outside load.
CONSTITUTION: Bidirectional changeover switches 10 and 11 are connected with the output side of a D/A converter 2, and whether the output of the D/A converter 2 is outputted through an operating amplifier 3 or directly outputted is selected. The switching of the switches 10 and 11 is operated by one bit control data inputted by lengthening a shift register 5 by one bit. Thus, this device can be used for the large power load and the load necessitating a high speed response without increasing the number of input terminals.
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Inventors:
ONISHI EIJI
Application Number:
JP21203392A
Publication Date:
February 10, 1994
Filing Date:
July 15, 1992
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H03M1/08; H03M1/66; (IPC1-7): H03M1/66; H03M1/08
Domestic Patent References:
| JPH04167818A | 1992-06-15 |
Attorney, Agent or Firm:
Kenichi Hayase
Next Patent: 表面多極異方性永久磁石体の製造方法