Voltage detection circuit, semiconductor device, method for...

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

Reexamination Certificate

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Details

C327S536000

Reexamination Certificate

active

07081776

ABSTRACT:
A voltage detection circuit for accurately detecting a voltage while suppressing the voltage fluctuation due to the off-leak current of a transistor. The voltage detection circuit includes first and second capacitors, first and second transistors, a comparator, and a control circuit. The capacitors are connected in series to generate a division voltage corresponding to a high voltage by the capacitors. The potential at a node between the first capacitor and the second capacitor is reset to ground potential when the transistors are activated. When the potential at the node reaches a predetermined potential, the first transistor is inactivated, and then the second transistor is inactivated.

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patent: 5282170 (1994-01-01), Van Buskirk et al.
patent: 5804866 (1998-09-01), Aiello et al.
patent: 6791395 (2004-09-01), Kim
patent: 07-202664 (1995-08-01), None
patent: 2001-052489 (2001-02-01), None
patent: 2001-095234 (2001-04-01), None
patent: 2002-015571 (2002-01-01), None
patent: 2002-051538 (2002-02-01), None

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