Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1998-06-29
2000-11-14
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327543, 323313, G05F 110
Patent
active
061475491
ABSTRACT:
A reference voltage generating circuit comprises a differential amplifier having a first input connected to receive a constant voltage and a second input connected through a voltage feedback path to an output of the differential amplifier so as to receive a voltage in proportion to an a first reference voltage outputted from the differential amplifier. A voltage divider composed of series-connected resistors is connected to the output of the differential amplifier so as to form a current path independent of the voltage feedback path, so that the voltage divider generates a second reference voltage different from the first reference voltage. Thus, a single reference voltage generating circuit generates a plurality of reference voltages.
REFERENCES:
patent: 4267505 (1981-05-01), Biglin
patent: 5105102 (1992-04-01), Shioda
patent: 5381034 (1995-01-01), Thrower et al.
patent: 5559424 (1996-09-01), Wrathall et al.
patent: 5818212 (1998-10-01), Min et al.
patent: 5933051 (1999-08-01), Tsuchida et al.
Callahan Timothy P.
NEC Corporation
Nguyen Hai L.
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