Signal processing circuit capable of selectively adjusting gain factor of sample-and-hold circuit and signal processing method thereof
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United States of America Patent
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Jul 14, 2015
Grant Date -
Sep 1, 2011
app pub date -
Feb 28, 2010
filing date -
Feb 28, 2010
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Abstract
A signal processing circuit including an amplifying circuit, a control circuit, and a sample-and-hold circuit is provided. The amplifying circuit receives an analog input signal and outputs a first analog signal by amplifying the analog input signal. The control circuit outputs a control signal according to the analog input signal. The sample-and-hold circuit is coupled to the amplifying circuit and the control circuit to selectively adjust a gain factor of the sample-and-hold circuit according to the control signal, thereby outputting a second analog signal according to the first analog signal and the gain factor.
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