Radio frequency circuit
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United States of America Patent
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Dec 8, 2015
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app pub date -
Feb 13, 2015
filing date -
Sep 22, 2009
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Abstract
A digital-to-analog conversion circuit operates by selectively charging or discharging members of a plurality of capacitors. Charging of the capacitors occurs during a reset period while digital-to-analog conversion occurs as the capacitors are discharged. Those capacitors that are charged or discharged are selected from the plurality of capacitors based on a digital input. The analog output includes the charge discharged from the selected capacitors.
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