Delta sigma circuit with pulse width modulated offset

Details Delta sigma circuit with pulse width modulated offset Delta sigma circuit with pulse width modulated offset

1998-12-21

2000-10-31

Phan, Trong

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

H03M 300

Patent

active

061409529

ABSTRACT:
A delta sigma (also called sigma delta) analog-to-digital converter circuit has an integrator input couplable to an analog signal and has a clocked controller generating a converted digital output representing the analog signal. An offset circuit that is pulse width modulated generates an offset current to the integrator input that electronically offsets the frequency of noise in the converted output.

REFERENCES:
patent: 4791352 (1988-12-01), Frick et al.
patent: 5083091 (1992-01-01), Frick et al.
patent: 5119033 (1992-06-01), Frick et al.
patent: 5153593 (1992-10-01), Walden et al.
patent: 5323156 (1994-06-01), Budmiger
patent: 5621408 (1997-04-01), Cake et al.

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