Image sensor system and amplifying/digitizing circuit therof for promoting performance while saving on power consumption and reducing the circuit area
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United States of America Patent
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Aug 19, 2014
Grant Date -
Aug 11, 2011
app pub date -
Feb 8, 2010
filing date -
Feb 8, 2010
priority date (Note) -
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Abstract
An amplifying/digitizing circuit with a signal amplifying capability and a comparator capability is provided. The amplifying/digitizing circuit includes an amplifier having an input end and an output end, and a control circuit. The control circuit is coupled to the input end and the output end of the amplifier. When the amplifying/digitizing circuit is operated under an amplifying mode, the control circuit has a first configuration to receive a first input signal and makes the amplifier generate an output voltage at the output end according to the first input signal and an amplification factor. When the amplifying/digitizing circuit is operated under an ADC mode, the control circuit has a second configuration to receive a second input signal and makes the amplifier generate a comparison result according to the second input signal and the output voltage.
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