Systems and methods for digital excess loop delay compensation in a continuous time delta sigma modulator

A continuous time delta sigma modulator is described in this application. In one example, the continuous time delta sigma modulator includes: a quantizer, a buffer module, a randomizer, and a reference module. The quantizer includes a comparator that generates a digital output based on a comparison...

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Bibliographic Details
Main Authors Lien, Bei-Shing, Kee, Tai-cheng, Horng, Jaw-Juinn, Chin, Pang-yen
Format Patent
LanguageEnglish
Published 07.04.2020
Subjects
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
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Summary:A continuous time delta sigma modulator is described in this application. In one example, the continuous time delta sigma modulator includes: a quantizer, a buffer module, a randomizer, and a reference module. The quantizer includes a comparator that generates a digital output based on a comparison of a reference potential with an input generated based on a sample of an analog signal. The buffer module stores the digital output for a predetermined delay period and outputs the digital output after the predetermined delay period as a delayed digital output. The randomizer randomizes the delayed digital output to generate a randomized digital output. The reference module modifies the reference potential based on the randomized digital output.
Bibliography:Application Number: US201816175561