Method for gain error estimation in an analog-to-digital...

Details Method for gain error estimation in an analog-to-digital... Method for gain error estimation in an analog-to-digital...

2008-05-20

2009-06-30

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S120000, C341S161000

Reexamination Certificate

active

07554469

ABSTRACT:
The invention provides a method for gain error estimation in an analog-to-digital converter. In one embodiment, the analog-to-digital converter comprises a plurality of stages. A series of correction numbers applied to a target stage selected from the stages are correlated with a series of calculation values calculated according to digital output values of the stages to generate a series of gain error estimates. The series of gain error estimates are multiplied by a series of updating parameters to obtain a series of first values. A series of previous gain error values are multiplied by one minus the corresponding updating parameters to obtain a series of second values, wherein the series of previous gain values are obtained by delaying the present gain error values. The series of first values and the series of second values are correspondingly added to obtain a series of present gain error values for gain error correction.

REFERENCES:
patent: 6563445 (2003-05-01), Sabouri
patent: 6970125 (2005-11-01), Cesura et al.
patent: 7280064 (2007-10-01), Lin

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