Delta sigma A/D modulator

Details Delta sigma A/D modulator Delta sigma A/D modulator

2009-08-29

2010-12-21

Nguyen, Linh V (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S118000, C341S120000, C341S131000, C341S155000, C375S316000, C375S317000, C375S319000, C375S345000

Reexamination Certificate

active

07855668

ABSTRACT:
A multibit quantizer is provided, at its input terminals, with a variable gain circuit and an offset addition circuit to perform tracking control in which for each sampling time, the level of an offset signal of the offset addition circuit is adjusted based on output digital data of an output processing circuit and the preceding control signal of an offset control circuit so that the quantizer operates without causing a saturation operation. As a result, the output digital data, in which the number of bits is greater than the number of bits of the quantizer by the offset value controlled by the offset addition circuit, is outputted from the output processing circuit for each sampling time.

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