Two reference voltage weighted capacitor digital to analog conve

Details Two reference voltage weighted capacitor digital to analog conve Two reference voltage weighted capacitor digital to analog conve

1985-03-07

1987-05-19

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347AD, 340347M, H03M 168

Patent

active

046671790

ABSTRACT:
A weighted capacitor digital to analog converter is disclosed which requires only one stage and one conversion step. By the use of two reference voltages and two groups of capacitors in parallel, various capacitors in these groups can be selectively switched from the reference voltages to ground potential in response to input binary digit signals thereby presenting a predetermined amount of voltage to the output amplifier depending upon the number and particular combination of capacitors switched or non-switched to ground.

REFERENCES:
patent: 2775754 (1956-12-01), Sink
patent: 4077035 (1978-02-01), Yee

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