Offset compensation scheme using a DAC

Details Offset compensation scheme using a DAC Offset compensation scheme using a DAC

2009-03-19

2010-12-14

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S155000

Reexamination Certificate

active

07852244

ABSTRACT:
An offset compensation scheme using a digital-to-analog converter (DAC) is disclosed. In some embodiments, a DAC is coupled to a circuit having an undesired current or voltage offset and is configured to at least in part compensate for the undesired current or voltage offset. For example, in some embodiments, the DAC injects current or voltage into the circuit that shifts a current or voltage of the circuit by an amount equal or similar in magnitude but opposite in polarity to a shift in the current or voltage of the circuit caused by the undesired current or voltage offset.

REFERENCES:
patent: 6191715 (2001-02-01), Fowers
patent: 6556154 (2003-04-01), Gorecki et al.
patent: 6822600 (2004-11-01), Taft et al.
patent: 7250880 (2007-07-01), Hurrell et al.
patent: 7319419 (2008-01-01), Lash et al.
patent: 7528752 (2009-05-01), Chern

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