Digital processing circuit with gain control

Details Digital processing circuit with gain control Digital processing circuit with gain control

1996-12-19

1998-11-10

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

341110, H03M 118

Patent

active

058350403

ABSTRACT:
The invention relates to a digital processing circuit comprising an analog/digital converter (1) situated at the input of the circuit, a device (2) for the digital processing of the signal emanating from the analog/digital converter and a digital/analog converter (3) situated at the output of the processing circuit. The digital processing circuit comprises means (A2, A3, T, RS, R1) making it possible to control its gain from a single voltage reference (VB). Preferably, the single voltage reference is a bandgap voltage and the circuit is made in CMOS technology. The invention applies to any type of audio or video equipment using such circuits.

REFERENCES:
patent: 4910515 (1990-03-01), Iwamatsu
Analog Devices Analog-Digital Conversion Handbook, copyright 1986, pp. 202, 203, 609-614.

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