Offset cancellation for sampled-data circuits

Details Offset cancellation for sampled-data circuits Offset cancellation for sampled-data circuits

2007-03-15

2010-11-30

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S091000, C327S307000

Reexamination Certificate

active

07843233

ABSTRACT:
A comparator based circuit with effective offset cancellation includes first and second amplifiers and an offset capacitor operatively connected to the first and second amplifiers. An offset voltage source generates an offset voltage. A first switch connects the offset voltage source to ground during a first time period. The first amplifier generates an output voltage in response to the first switch connecting the offset voltage source to ground during the first time period. A second switch connects the offset capacitor to ground during a second time period. The first switch disconnects the offset voltage source from ground during a third time period, and the second switch disconnects the offset capacitor from ground during the third time period.

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European Search Report issued on Mar. 18, 2009, corresponding to European Application No. 07758608.9.

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