Bandgap voltage reference circuit

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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Details

307310, 323313, 323314, H03K 301, H03K 326

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active

050536400

ABSTRACT:
A voltage reference circuit employs a bandgap cell to establish a voltage reference, stabilized relative to the bandgap voltage of silicon, and a compensation circuit for compensating non-linear temperature dependence of the bandgap stabilized voltage reference. A two or three transistor type bandgap cell may be employed to establish the bandgap reference voltage along with a voltage divider network to adjust the output reference voltage relative to the bandgap voltage of silicon. The compensation circuit preferably employs a compensation resistor in the resistor divider network, and a switching circuit for switching current therethrough. This provides empirically determined adjustments to the output reference voltage by switching current through the compensation resistor in accordance with predetermined temperature thresholds.

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patent: 4797577 (1989-01-01), Hing
patent: 4808908 (1989-02-01), Lewis et al.
R. J. Widlar "New Developments in IC Voltage Regulators," IEEE Journal of Solid State Circuits, vol. SC-6, Feb. 1971.
A. P. Brokaw "A Simple Three-Terminal IC Bandgap Reference," IEEE Journal of Solid State Circuits, vol. SC-9, No. 6, Dec. 1974.
G. C. M. Meijer, et al. "A New Curvature-Corrected Bandgap Reference," IEEE Journal of Solid State Circuits, vol. SC-17, No. 6, Dec. 1982.
R. A. Pease, "A Fahrenheit Temperature Sensor," 1984 IEEE International Solid State Circuits Conference.

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