Analog/digital converter and voltage comparator capable of fast

Details Analog/digital converter and voltage comparator capable of fast Analog/digital converter and voltage comparator capable of fast

1997-12-01

1999-10-12

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341122, 341118, 341161, 327 96, H03M 110

Patent

active

059660880

ABSTRACT:
An A/D converter includes a sample-hold circuit, A/D converting stages connected in series to the sample-hold circuit, and an encoder/latch circuit which adds 3-bit digital signals issued from the A/D converting stages to each other for outputting a signal of 9 bits. The sample-hold circuit and the A/D converting stages each include a differential amplifier. Differential outputs of each differential amplifier are short-circuited for a predetermined initial period in each sampling period.

REFERENCES:
patent: 4587443 (1986-05-01), van de Plassche
patent: 5047727 (1991-09-01), Theus
patent: 5391999 (1995-02-01), Early et al.
patent: 5497120 (1996-03-01), Ito et al.
patent: 5594445 (1997-01-01), Ginetti
patent: 5894284 (1999-04-01), Garrity et al.
"A 10-bit 50MS/s 300mW A/D Converter using Reference Feed-Forward Architecture", Kumamoto et al., ESSCIRC'96, pp. 220-223.

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