Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2008-11-03
2010-12-14
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S554000
Reexamination Certificate
active
07852124
ABSTRACT:
A correlated double sampling circuit and method for providing the same are disclosed. The circuit may include an amplifier, a plurality of capacitors, and a switch matrix. The amplifier provides a reset voltage replica and a signal voltage replica. The switch matrix controls a plurality of switches to perform correlated double sampling over at least three phases. The first phase for sampling the reset voltage replica on a first and second capacitors. The second phase for sampling the reset voltage replica and the kTC noise on a third capacitor. The first phase producing a thermal kTC noise from the first and second capacitors. The third phase for subtracting a charge representing the signal voltage replica, the kTC noise and the reset voltage replica, combined, from the charge sampled in the second phase to provide an output voltage. The method for providing low noise correlated double sampling includes controlling the plurality of switches to provide the at least three phases.
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Lauxtermann Stefan C.
Lee Adam
Stevens John
Donovan Lincoln
Koppel, Patrick, Heybl & Dawson
Poos John W
Teledyne Scientific & Imaging, LLC
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