Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2005-09-08
2008-11-18
Lam, Tuan T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S092000
Reexamination Certificate
active
07453291
ABSTRACT:
Circuits that provide a gate boost to address non-linear threshold voltage variation in a CMOS T/H circuit. In embodiments of the invention, a boost capacitor and a feedback amplifier add a signal-dependent threshold voltage to the switch gate over-drive voltage of a switch that controls track and hold circuit sampling. In a modified embodiment, capacitive boost is omitted and the feedback amplifier provides the signal-dependent threshold voltage boost. In another embodiment, a boost capacitor and a diode connected transistor provide the signal-dependent threshold voltage boost. In a modified embodiment, capacitive boost is omitted and the diode connected transistor provides the signal-dependent threshold voltage.
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Greer Burns & Crain Ltd
Lam Tuan T.
Nguyen Hiep
The Regents of the University of California
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