Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2005-05-24
2008-11-25
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
Reexamination Certificate
active
07456680
ABSTRACT:
A voltage for reference at a voltage level higher than a target value is produced from a constant current provided from a constant current generating circuit, and is subjected to resistance division by a resistance division circuit to produce a reference voltage at the target level, and then a final reference voltage is produced by a voltage follower. An internal voltage generating circuit thus provided can generate the reference voltage having the desired voltage level with high accuracy as well as an internal voltage based on the reference voltage by controlling temperature characteristic even with a low power supply voltage.
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Gyohten Takayuki
Morishita Fukashi
Buchanan & Ingersoll & Rooney PC
Renesas Technology Corp.
Tra Quan
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