Delta-sigma modulation analog to digital converter

Details Delta-sigma modulation analog to digital converter Delta-sigma modulation analog to digital converter

1989-05-05

1990-11-06

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341155, 375 28, H03M 302

Patent

active

049689878

ABSTRACT:
A delta-sigma modulation analog to digital converter for converting an analog input signal to a digital output signal. The converter includes a clock generator for generating a very high frequency clock signal, a dither signal generator responsive to the clock signal generator for generating a dither signal which is synchronized with the clock signal, an adder coupled to the dither signal generator for combining the analog input signal and the dither signal, a delta-sigma modulation type quantizer coupled to the adder for quantizing the analog input signal and the dither signal in response to the clock signal and a data decimation circuit responsive to the clock signal and coupled to the delta-sigma modulation type quantizer for decimation prescribed quantization data from the quantized signal and producing a digital signal corresponding to the analog input signal.

REFERENCES:
patent: 4509037 (1985-04-01), Harris
patent: 4746899 (1988-05-01), Swanson et al.
patent: 4851841 (1989-07-01), Sooch

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