Precision bipolar current-mode digital-to-analog converter

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United States of America Patent

PATENT NO 9735798
SERIAL NO

14454685

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Abstract

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A precision bipolar digital-to-analog converter (DAC) that provides a bipolar current output having a substantially fixed zero center point is provided. The DAC includes digital-to-analog converter circuitry configured to provide, responsive to a reference signal indicative of the digital data, a first analog current signal having a first potential and a second analog current signal having a second potential, subtractor circuitry configured to provide a bipolar current signal by subtracting the second analog current signal from the first analog current signal, the bipolar current signal having a zero center point, and first control circuitry electrically coupled to the subtractor circuitry and to the digital-to-analog converter circuitry, and configured to modify the second potential so that the second potential equals the first potential.

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Patent Owner(s)

Patent OwnerAddress
GENERAL ATOMICS3550 GENERAL ATOMICS COURT SAN DIEGO CA 92121

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chan, Wen Ontario, CA 5 43

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