Chopper type comparator having input voltage conversion...

Details Chopper type comparator having input voltage conversion... Chopper type comparator having input voltage conversion...

2005-06-28

2005-06-28

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

By periodic switching

C327S080000

Reexamination Certificate

active

06911849

ABSTRACT:
A chopper comparator includes an input voltage conversion circuit, a reference voltage input circuit and a comparison amplifier. The input voltage conversion circuit is applied to an input voltage. The input voltage conversion circuit converts the input voltage to a converted input voltage that is lower than a first voltage. The reference voltage input circuit provides a reference voltage. The comparison amplifier compares a voltage of the converted input voltage with the reference voltage and amplifies a result of the comparison. The comparison amplifier includes an inverter having a withstand voltage substantially equal to the first voltage.

REFERENCES:
patent: 5424657 (1995-06-01), Van Brunt et al.
patent: 5734714 (1998-03-01), Nishimura
patent: 5-199084 (1993-08-01), None
patent: 5-235289 (1993-09-01), None
patent: 7-161926 (1995-06-01), None
patent: 9-93624 (1997-04-01), None
patent: 2001-53558 (2001-02-01), None

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