Sigma Delta analog to digital converter with three point calibra

Details Sigma Delta analog to digital converter with three point calibra Sigma Delta analog to digital converter with three point calibra

1994-10-28

1997-01-28

Hoff, Marc S.

Coded data generation or conversion

Converter calibration or testing

341143, H03M 110

Patent

active

055981577

ABSTRACT:
An analog to digital converter 10 has a switched capacitor analog modulator 12 with three point calibration. Offset calibration applies on offset correction value in OCR 22 to an uncalibrated digital output. Register 28 holds a desired full scale value, register 24 holds a positive full scale value, and register 26 holds a negative full scale value. Depending upon the polarity of the converted analog signal, the offset corrected digital signal is multiplied by a positive or a negative gain correction factor.

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