Comparator with low supply current spike and input offset...

Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude

Reexamination Certificate

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Details

C327S066000, C327S072000, C330S252000, C330S253000

Reexamination Certificate

active

07609093

ABSTRACT:
A current control circuit is coupled in parallel with the current paths of a differential comparator circuit to ensure that a substantially constant current is drawn from a current source during all operating phases of a comparator. The current control circuit is biased by a reference voltage, which is also used to bias a V− input terminal of the differential comparator circuit. The reference voltage is stored by a sample capacitor, which is charged by applying the reference voltage to a V+ input terminal of the differential comparator circuit while coupling an output terminal of the differential comparator circuit to the sample capacitor in a unity feedback configuration.

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