Amplified CMOS transducer for single photon read-out of photodetectors
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United States of America Patent
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Mar 25, 2003
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Oct 26, 2000
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Oct 26, 2000
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Abstract
An ultra-low noise, high-gain interface pixel amplifier is provided with capability for single-photon readout of known photodetectors at high electrical bandwidths for diverse spectral bandpass from the x-ray to long IR bands. The detector charge modulates a source follower whose output is double sampled to remove correlated noise by a compact stage that also facilitates low-noise gain adjustment for a second gain stage of programmable amplification. Single-photon readout of photodetectors at high electrical bandwidths in small pixel areas is thereby facilitated.
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