Electronic circuit
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United States of America Patent
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Jul 13, 2010
Grant Date -
Jan 8, 2009
app pub date -
Jul 3, 2008
filing date -
Jul 5, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electronic circuit includes a differential amplifier circuit, a first smoothing circuit, a second smoothing circuit and a first switch. The differential amplifier circuit receives a digital input signal and a reference signal. The first smoothing circuit smoothes the digital input signal with a first capacitance value. The second smoothing circuit smoothes the digital input signal with a second capacitance value larger than the first capacitance value. The first switch selects one of output signals from the first smoothing circuit and the second smoothing circuit as the reference signal.
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