Sigma-delta modulator for PWM applications with minimum...

Details Sigma-delta modulator for PWM applications with minimum... Sigma-delta modulator for PWM applications with minimum...

2008-10-08

2010-11-09

Nguyen, Linh V (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000, C341S169000, C341S170000

Reexamination Certificate

active

07830289

ABSTRACT:
The circuit includes, upstream from a PWM quantizer, that is between the output of the sigma-delta modulator and the input of the PWM or PWM-like quantizer, a second or ancillary sigma-delta stage of any order and architecture, with the function of controlling the minimum dynamic of the sigma-delta modulator. This second sigma-delta stage is input with the output signal of the sigma-delta modulator summed to a signal corresponding to the difference between the input signal and the output signal of the second sigma-delta stage, delayed by a delay block.

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