Analog-to-digital converter with correction of offset errors

Details Analog-to-digital converter with correction of offset errors Analog-to-digital converter with correction of offset errors

2006-08-01

2006-08-01

Wamsley, Patrick (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S161000

Reexamination Certificate

active

07084791

ABSTRACT:
An analog-to-digital converter (200) includes at least one stage (105) for converting an analog input signal into a digital output signal using a parallel quantizer (115) comparing the analog input signal with a plurality of threshold values in parallel. The analog-to-digital converter includes, for at least one selected stage (105), an estimating circuit (210,220) for estimating an analog correction signal indicative of the mean value of a quantization error of the selected stage, and a compensating circuit (440i) for at least partially compensating an offset error of the parallel quantizer (105) in the selected stage according to the analog correction signal. A method and computing system are also provided.

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European Search Report dated Jul. 10, 2003 for European Application No. 03425094.

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