R2R digital to analog converter with common shutdown mode

Details R2R digital to analog converter with common shutdown mode R2R digital to analog converter with common shutdown mode

1995-11-27

1997-09-16

Gaffin, Jeffrey A.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341144, 361 92, H03M 166

Patent

active

056685530

ABSTRACT:
A digital to analog converter (DAC) includes "shut-down" circuitry that opens connections between the DAC's reference and output sections. The shutdown circuitry provides reduced power consumption while permitting the DAC's control registers to retain their values. The invention is applicable to both stand-alone DAC and analog to digital converters (ADCs) which incorporate a DAC and can be microprocessor controlled.

REFERENCES:
patent: 5258758 (1993-11-01), Sooch
patent: 5422807 (1995-06-01), Mitrh et al.
patent: 5543794 (1996-08-01), Kanzaki
Paul Horowitz, Winfield Hill, The Art of Electronics, Cambridge University Press, New York, 1989, pp. 142-143, 614-616-622-624 and 917-985.
"Octal 8-Bit Trim DAC with Power Shutdown", AD8801/AD8803, Analog Devices Brochure, 1995, pp. 1-15.
"DAC-8800 Octal 8-Bit CMOS D/A Converter", Precision Monolithics Inc. Brochure, Aug. 1989, Rev. A, pp. 1-15.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, P T R Prentice Hall, pp. 201-206.

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