Offset voltage calibration method and apparatus and...

Details Offset voltage calibration method and apparatus and... Offset voltage calibration method and apparatus and...

2011-04-12

2011-04-12

Choe, Henry K (Department: 2817)

Amplifiers

With periodic switching input-output

C330S279000

Reexamination Certificate

active

07924088

ABSTRACT:
An offset voltage calibration method is disclosed, which is utilized for calibrating an offset voltage of an electronic device during a calibration period. The offset voltage calibration method includes generating a control signal according to an output signal of the electronic device, counting a count value and generating an offset indication signal according to the control signal, stopping counting and generating a final count value according to a compensation value after the output signal changes state, generating a calibration signal according to the count value or the final count value, and calibrating the offset voltage according to the offset indication signal and the calibration signal.

REFERENCES:
patent: 5061900 (1991-10-01), Vinn et al.
patent: 6897700 (2005-05-01), Fu et al.
patent: 7514978 (2009-04-01), Smelloy et al.
patent: 7532065 (2009-05-01), Chen et al.
patent: 7755421 (2010-07-01), Chen et al.
patent: 2009/0302923 (2009-12-01), Smeloy et al.

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