Controllable integrated linear attenuator for a D/A converter

Details Controllable integrated linear attenuator for a D/A converter Controllable integrated linear attenuator for a D/A converter

1997-08-08

1999-08-24

Hoff, Marc S.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

330261, H03M 166

Patent

active

059429992

ABSTRACT:
An integrated D/A converter has a first feedback circuit for generating a first bias voltage to compensate for systemic changes. A second feedback circuit includes a plurality of switchable current sources biased by the first bias voltage and controlled by an externally supplied attenuation control signal to generate a second bias voltage which is applied to control the D/A current sources.

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BTR-CF88 Peur -- BAXA6 200 Mhz CMOS 4S Video DAC Macro, S. J. Stratz, Oct. 20, 1993 pp. 1-12.

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