Out-of-range detector for pipeline ADC

Details Out-of-range detector for pipeline ADC Out-of-range detector for pipeline ADC

1997-07-15

1999-07-27

Hoff, Marc S.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341161, 341118, H03M 114

Patent

active

059297999

ABSTRACT:
Out-of-range comparators for an analog-to-digital converter at other than the first stage of a pipeline ADC. By using a subsequent stage, the accuracy required for the ADC is reduced. The offset voltage of these comparators are reduced when input referred through the gain of the cascade of pipeline amplifiers in front of it, thus reducing the necessary accuracy required for out-of-range indication. This results in the accuracy requirement of the out-of-range comparators being greatly reduced. ADC fault detection is possible when these out-of-range comparators are located at the output of the final stage.

REFERENCES:
patent: 4386339 (1983-05-01), Henry et al.
patent: 4908621 (1990-03-01), Polonio et al.
patent: 5043732 (1991-08-01), Robertson et al.
patent: 5274377 (1993-12-01), Matsuura et al.
patent: 5420587 (1995-05-01), Michel
patent: 5668549 (1997-09-01), Opris et al.

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