Voltage reference circuit with power supply compensation

Details Voltage reference circuit with power supply compensation Voltage reference circuit with power supply compensation

1990-06-04

1992-01-28

Beha, Jr., William H.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323303, 323314, 323901, 323907, G05F 1567, G05F 508

Patent

active

050846655

ABSTRACT:
A BiMOS voltage reference circuit which includes a bandgap circuit for providing a predetermined voltage at an output of the circuit that is independent of temperature. A start-up and bias circuit coupled to the bandgap circuit for providing a start-up current to the bandgap circuit during power-up and for providing a bias current to the bandgap circuit after power-up. A feedback circuit coupled to the bandgap circuit for maintaining the bias current to the bandgap circuit independent of power supply variations wherein the predetermined voltage at the output of the circuit is also independent of power supply variations as well as temperature.

REFERENCES:
patent: 3671770 (1972-06-01), Frederiksen
patent: 4447784 (1984-05-01), Dobkin
patent: 4450514 (1984-05-01), Peruth
patent: 4792749 (1988-12-01), Kitagawa et al.
patent: 4906863 (1990-03-01), Tran

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