Delta-sigma AD converter apparatus using delta-sigma...

Details Delta-sigma AD converter apparatus using delta-sigma... Delta-sigma AD converter apparatus using delta-sigma...

2008-04-09

2009-11-17

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000

Reexamination Certificate

active

07619550

ABSTRACT:
In a delta-sigma modulator circuit, an integrator integrates an input signal, and a quantization circuit quantizes the integrated signal with a predetermined quantization number, and outputs a quantization result signal. A DA converter circuit outputs an analog signal indicating a DA conversion result based on the quantization result signal. An oscillation detector circuit detects that the integrator is in an oscillation state based on the integrated signal, and outputting an oscillation detection signal. A reset circuit resets the integrator based on the oscillation detection signal.

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patent: 2002-118431 (2002-04-01), None

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