Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2006-05-30
2006-05-30
Cunningham, Terry D. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S543000, C323S313000
Reexamination Certificate
active
07053694
ABSTRACT:
A band-gap circuit is constituted by comprising a feedback control amplifier31and MOS transistors32and35, having two transistors33and34of which emitter area is different, comprising resistors R1, R2and Rpbetween a base and an emitter of the transistor33of which emitter area is smaller, having the resistor Rpbetween the base and a collector and comprising the resistors R1and R2between the base and emitter of the transistor34of which emitter area is larger. It is possible to provide the band-gap circuit operable at a low supply voltage and having high PSRR, low noise and few variations.
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Asahi Kasei Microsystems Co. Ltd.
Cunningham Terry D.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
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