ST Micro patent Application US20120006973 proposes to sample bias voltages and currents and hold them between CDS reset sample and signal sample, so that any bias noise does is constant over CDS cycle and, thus, subtracted. For example, in case of pixel current bias it might look like this:
In case of some other generic bias voltage, S&H might look like this:
In case of some other generic bias voltage, S&H might look like this:
ST Proposes Bias S&H to Reduce Noise
Reviewed by MCH
on
January 19, 2012
Rating:
Reviewed by MCH
on
January 19, 2012
Rating:
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