Nested transimpendance amplifier
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United States of America Patent
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Apr 17, 2012
Grant Date -
Jan 27, 2011
app pub date -
Aug 17, 2010
filing date -
Mar 13, 2001
priority date (Note) -
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Abstract
A nested transimpedance amplifier circuit including a first power source, a second power source, a charge pump module and a transimpedance amplifier. The first power source is at a first voltage. The second power source is at a second voltage. The second voltage is different than the first voltage. The charge pump module (i) receives the first voltage and the second voltage and (ii) generates a third voltage based on the first voltage and the second voltage. The first transimpedance amplifier includes an input, an output and a first operational amplifier. The input of the first transimpedance amplifier receives an input voltage. The output of the first transimpedance amplifier outputs an output voltage. The first operational amplifier receives the third voltage. The first transimpedance amplifier generates the output voltage based on the third voltage and the input voltage.
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