Beating The 1/F Noise Limit On Charge Coupled Devices
HIGH ENERGY, OPTICAL, AND INFRARED DETECTORS FOR ASTRONOMY V(2012)
摘要
Scientific CCD detectors are typically readout using the Correlated Double Sampling (CDS) technique. At low pixel rates, noise of similar to 2e- RMS is typically achieved. The limitation for reaching lower noise comes from the 1/f component on the output of the CCD, and this noise cannot be eliminated using CDS. A new readout technique based on a digital filter is presented here for suppressing the 1/f. Using this new technique a noise of 0.4e- is achieved.
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关键词
CCD, noise, digitial filtering
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