Bandgap voltage reference circuit with an npn current bypass cir

Details Bandgap voltage reference circuit with an npn current bypass cir Bandgap voltage reference circuit with an npn current bypass cir

1987-05-01

1989-01-03

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307310, 323313, 323907, G05F 320

Patent

active

047959185

ABSTRACT:
A temperature compensated bandgap voltage reference circuit employs an npn transistor based bypass circuit to maintain a constant collector current within the reference circuit. This bypass circuit draws a nominal current from the bandgap voltage reference circuit. The value of this current is set by a bias circuit responsive to changes in the supply voltage. As the supply voltage changes, the bias circuit varies the conductance of a bypass transistor to draw more or less current and thereby maintain the collector current within the reference circuit constant.

REFERENCES:
patent: 3970876 (1976-07-01), Allen et al.
patent: 4322676 (1982-03-01), Toyoda
patent: 4570114 (1986-02-01), Heim
patent: 4675593 (1987-06-01), Minakuchi
Brunin, "Adjusted Voltage Reference", IBM TDB vol. 19, No. 10, Mar. 1977, pp. 3758-3759.

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