Programmable segmented digital-to-analog converter (DAC)
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United States of America Patent
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May 31, 2011
Grant Date -
Jan 13, 2011
app pub date -
Oct 28, 2009
filing date -
Jul 9, 2009
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Provided herein are segmented digital to analog converters (DACs), methods for use therewith, and systems that include one or more such DACs. According to an embodiment, a DAC includes a plurality of sub-DACs, a DAC input adapted to receive a multi-bit digital input and a DAC output adapted to output an analog output current in response to and indicative of the digital input. Each sub-DAC is adapted to receive a separate reference current that specifies a transfer function of the sub-DAC. A magnitude of the reference current provided to each sub-DAC is separately programmable to thereby separately control a gain of each sub-DAC.
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