Analog to digital converter

Details Analog to digital converter Analog to digital converter

1982-11-18

1986-01-21

Krass, Errol A.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1302

Patent

active

045659923

ABSTRACT:
An A/D converter comprises an integrator circuit adapted to receive a first negative reference voltage at a first node and act as a voltage follower and adapted to integrate a second reference voltage with a capacitor at a second mode, the second reference voltage is more positive than the first reference voltage, a comparator for comparing an integrator output with a ground level and an analog input level at a second mode, and a counter for counting clock pulses when an integrator output is between the ground level and the analog input level.

REFERENCES:
patent: 3534257 (1970-10-01), Charap et al.
patent: 3665305 (1972-05-01), Petrohilos
patent: 4218675 (1980-08-01), Shaw et al.
patent: 4243975 (1981-01-01), Masuda et al.
patent: 4291299 (1981-09-01), Hinz et al.
patent: 4393371 (1983-07-01), Morgan-Smith
patent: 4415869 (1983-11-01), Duijkers
patent: 4504741 (1985-03-01), Armitage
Schmid, Hermann, Electronic Analog/Digital Conversions, 1970, pp. 275-279.

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