Radio frequency circuit
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United States of America Patent
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Aug 7, 2012
Issued Date -
N/A
app pub date -
Sep 22, 2009
filing date -
Sep 22, 2009
priority date (Note) -
Expired
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Abstract
A digital-to-analog conversion circuit operates by selectively 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 discharged are selected from the plurality of capacitors based on a digital input. The analog output includes the charge discharged from the capacitors. The capacitors are optionally divided into separate capacitor banks.
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