Bandgap voltage reference and method with further temperature co

Details Bandgap voltage reference and method with further temperature co Bandgap voltage reference and method with further temperature co

1989-03-30

1990-07-03

Beha, Jr., William H.

Electricity: power supply or regulation systems

Output level responsive

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

323314, 323907, G05F 1567, G05F 330

Patent

active

049394428

ABSTRACT:
A voltage reference circuit (26) provides a stable output reference voltage over a wide temperature range. A high temperature curvature correction circuit (36) is enabled at a first predetermined temperature to adjust the output voltage accordingly. A low temperature curvature correction circuit (38) is enabled at temperatures below a second predetermined temperature to similarly affect a output voltage. The preferred embodiment, the high and low curvature correction circuits (36, 38) are operable to vary the current through one or more resistors in a bandgap circuit (26) or other reference circuit.

REFERENCES:
patent: 4325018 (1982-04-01), Schade
patent: 4525663 (1985-06-01), Henry
patent: 4603291 (1986-07-01), Nelson
patent: 4633165 (1986-12-01), Pietkiewicz
patent: 4668903 (1987-05-01), Elbert
patent: 4789819 (1988-12-01), Nelson
patent: 4808908 (1989-02-01), Lewis et al.
Martin, "Temperature Sensing and Compensating Reference Voltage Supplies," IBM Tech. Discl. Bul., vol. 7, No. 5, pp. 357-358, (10-1964).
"Session VI: Data Acquisition Circuits, A Curvature Corrected Micropower Voltage Reference", Carl R. Palmer and Robert C. Dobkin, 1981 IEEE International Solid-State Circuits Conf., pp. 58-59.
"A New Curvature-Corrected Bandgap Reference", Gerard Meijer, Peter C. Schmale and Klaas Van Zalinge, 1982 IEEE Journal of Solid-State Circuits, vol. SC-17 No. 6 Dec., 1982, pp. 1139-1143.

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