Differential voltage output digital-to-analog converter

Details Differential voltage output digital-to-analog converter Differential voltage output digital-to-analog converter

2005-02-08

2005-02-08

Tokar, Michael (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S133000, C341S136000, C341S153000

Reexamination Certificate

active

06853323

ABSTRACT:
A digital-to-analog converter (DAC) for use in high-speed wireless communications. The DAC of the invention comprises a plurality of current steering cells to bi-directionally provide a differential current output. When the DAC sets the differential current output to zero for example, each of the current steering cells establishes dummy branches between a pair of current sources and thereby prevents the current sources from floating. This in turn enables the DAC to operate with a higher update rate.

REFERENCES:
patent: 6100830 (2000-08-01), Dedic
patent: 6329940 (2001-12-01), Dedic
patent: 6603417 (2003-08-01), Greig
patent: 6621432 (2003-09-01), Ganci
patent: 6664906 (2003-12-01), Volk

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