Oversampled pipeline A/D converter with mismatch shaping

Details Oversampled pipeline A/D converter with mismatch shaping Oversampled pipeline A/D converter with mismatch shaping

1999-02-09

2000-10-24

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341163, 341143, H03M 100

Patent

active

061374318

ABSTRACT:
An analog-to-digital converter including an input that samples an analog input signal; circuitry for multiplying the sampled analog input signal by a sequence including -1 and 1; a conversion unit which converts the analog input signal into a monotonic digital output signal; and circuitry for multiplying the digital output signal by the sequence of -1 and 1 in phase with the first means to produce a mismatch shaped digital output signal. In another embodiment of the invention there is provided a method of analog-to-digital including sampling phases of an analog input signal; multiplying the sampled phases of the analog input signal by a sequence including -1 and 1; converting the analog input signal into a monotonic digital output signal; and multiplying in phase the digital output signal by the sequence of -1 and 1 in phase to produce a mismatch shaped digital output signal.

REFERENCES:
patent: 4994804 (1991-02-01), Sakaguchi et al.
patent: 4994805 (1991-02-01), Dedic et al.
patent: 5416485 (1995-05-01), Lee
patent: 5459464 (1995-10-01), Beneteau et al.
patent: 5499027 (1996-03-01), Karanicolas et al.
patent: 5675334 (1997-10-01), McCartney

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