Source voltage detecting circuit
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United States of America Patent
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-
May 1, 2001
Grant Date -
N/A
app pub date -
Oct 26, 1998
filing date -
Oct 27, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The provision of a source voltage detecting circuit suitable for integrated circuits, wherein a very simple circuit arrangement makes it possible to satisfy various characteristics required by source voltage detection and to control detection voltage in wafer process. A source voltage detecting circuit, comprising a first resistor R.sub.1, a second resistor R.sub.2 and a reference voltage source RV which are connected in series between a power source V.sub.CC and the ground GND, wherein the point of connection P.sub.1 between said first and second resistors R.sub.1, and R.sub.2 is connected to the output terminal of a negative resistance characteristic section NR, and the point of connection P.sub.2 between said second resistor R.sub.2 and the reference voltage source RV is connected to the input terminal of the negative resistance characteristic section NR.
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