Analog-to digital converter with delta-sigma modulator

Details Analog-to digital converter with delta-sigma modulator Analog-to digital converter with delta-sigma modulator

1996-10-23

1999-05-25

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341155, H03M 100

Patent

active

059072997

ABSTRACT:
An analog-to-digital converter according to the present invention comprising a comparator having first and second inputs, and an output, the comparator comparing an analog input voltage at the first input to a tracking voltage at the second input to place a digital output on the comparator output in response thereto, a voltage switching matrix having an input connected to the output of the comparator and an output, an integrator having an input connected to the output of the voltage switching matrix and an output connected to the second input of the comparator to complete a feedback loop and to provide the tracking signal to the second input of the comparator, and a digital filter coupled to the output of the comparator, the digital filter to form a digital output corresponding to the analog input signal at the first input of the comparator.

REFERENCES:
patent: 3585634 (1971-06-01), Sharples
patent: 3747089 (1973-07-01), Sharples
patent: 4739305 (1988-04-01), Naito
patent: 4992748 (1991-02-01), Gard
patent: 5633989 (1997-05-01), Shin et al.

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