Sigma-delta type analog to digital converter with trimmed output

Details Sigma-delta type analog to digital converter with trimmed output Sigma-delta type analog to digital converter with trimmed output

1990-12-26

1991-07-09

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

375 27, H03M 300

Patent

active

050309528

ABSTRACT:
An analog signal is input to a converter where a feedback signal is subtracted to form an analog error signal. The analog error signal is then processed through a first quantizer to provide a course output bit. The difference between the input and output of the first quantizer is then processed through a second quantizer to provide a trim output bit. The two bits are combined and returned as the feedback signal and are provided to a decimation filter which will provide the digital output representation of the analog input.

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