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

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

2008-04-15

2008-04-15

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S536000

Reexamination Certificate

active

11482129

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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