Voltage comparator circuit capable of avoiding erroneous operati

Details Voltage comparator circuit capable of avoiding erroneous operati Voltage comparator circuit capable of avoiding erroneous operati

1993-09-24

1995-01-10

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 77, 327 91, H03K 524

Patent

active

053810538

ABSTRACT:
A reference voltage terminal and an input voltage terminal are connected via a first capacitor to a first electrode of a differential amplifier. Also, the reference voltage terminal and the input voltage terminal are connected via a second capacitor to a second electrode of a differential amplifier. The first capacitor samples a difference Vref-Vin in potential between the reference voltage terminal (Vref) and the input voltage terminal (Vin), and the second capacitor samples a difference Vin-Vref in potential between the reference voltage terminal and the input voltage terminal. Thus, the differential amplifier amplifies 2.times.(Vref-Vin).

REFERENCES:
patent: 4845383 (1989-07-01), Iida
patent: 5113090 (1992-05-01), Imaizumi et al.
patent: 5148054 (1992-09-01), Demler
patent: 5262686 (1993-11-01), Kurosawa
T. Matsuura et al: "An 8b 20 MHz CMOS Half-Flash A/D Converter", ISSCC Digest of Technical Papers, pp. 220-221, Feb., 1988.

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