Analog to digital converter having digital correction logic...

Details Analog to digital converter having digital correction logic... Analog to digital converter having digital correction logic...

2009-05-08

2010-11-09

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

C341S155000

Reexamination Certificate

active

07830287

ABSTRACT:
An analog to digital converter is provided. The converter comprises a dither gain generator, a first stage, an adder, a second stage, and a digital error correction logic. The dither gain generator generates a dither gain. The first stage receives a first voltage to generate a first digital code and a second voltage. The adder is coupled to the first stage and adds the dither voltage to the second voltage to generate a third voltage. The second stage receives the third voltage to generate a second digital code. The digital error correction logic receives and corrects the first digital code and the second digital code to generate a digital code corresponding to the first voltage.

REFERENCES:
patent: 6172629 (2001-01-01), Fetterman
patent: 6404364 (2002-06-01), Fetterman et al.
patent: 6548611 (2003-04-01), Lai et al.
patent: 6784814 (2004-08-01), Nair et al.
patent: 7129874 (2006-10-01), Bjornsen
patent: 2009/0231174 (2009-09-01), Sutardja

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