Adaptive amplifier circuit with enhanced dynamic range
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United States of America Patent
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Jan 7, 2003
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app pub date -
Sep 29, 2000
filing date -
Sep 29, 2000
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Abstract
An adaptive amplifier circuit with minimal excess noise and a linear charge-handling capacity exceeding 10.sup.9 electrons to enable high-quality imaging at long wavelength infrared backgrounds and video frame rates with enhanced dynamic range is disclosed. An integration capacitor stores a charge produced from a photodetector. An adaptive skimming circuit skims off excess charge during integration of the charge on the integration capacitor. A switched-capacitor low pass filter provides enhanced dynamic range.
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