D/A converter capable of disabling the output

Details D/A converter capable of disabling the output D/A converter capable of disabling the output

1994-11-22

1997-02-11

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341144, H03M 178

Patent

active

056025521

ABSTRACT:
A digital/analog converting circuit wherein, on the digital signal input side of each of resistances D.sub.1, D.sub.2 . . . D.sub.n whose one end being connected to a digital signal input and the other end to an analog signal output, each of the three-state non-inverting buffers B.sub.1, B.sub.2 . . . B.sub.n is provided, and between the analog signal output side of the resistance D.sub.n and the ground potential portion, a MOS transistor 20 is provided. It enables to switch the output
on-output or an analog signal obtained by converting a digital signal, and as a result, a digital/analog converting circuit not generating non-linear region in the digital/analog conversion characteristic can be obtained.

REFERENCES:
patent: 4551709 (1985-11-01), Merchant et al.
patent: 4833473 (1989-05-01), Dingwall
patent: 5043731 (1991-08-01), Nishimura
patent: 5119095 (1992-06-01), Asazawa

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