Digital to analog converter and a ground offset compensation...

Details Digital to analog converter and a ground offset compensation... Digital to analog converter and a ground offset compensation...

2007-07-24

2007-07-24

Nguyen, Khai M. (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S120000, C341S144000, C341S154000

Reexamination Certificate

active

11266041

ABSTRACT:
A digital to analog converter comprising: a digital to analog conversion core adapted to receive at least one reference voltage and a digital word to be converted, and to output an analog voltage as a function of the digital word and the at least one reference voltage; a sensing circuit for sensing a difference between a first ground voltage associated with an output of the digital to analog converter and a ground reference voltage occurring at the digital to analog converter; and a compensation circuit for applying a compensation voltage to the at least one reference voltage used by the conversion core of the digital to analog converter.

REFERENCES:
patent: 4491825 (1985-01-01), Tuthill
patent: 4843394 (1989-06-01), Linz et al.
patent: 5212484 (1993-05-01), Hillis
patent: 6204785 (2001-03-01), Fattaruso et al.
patent: 6750797 (2004-06-01), Gunther
patent: 6859157 (2005-02-01), Gunther

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