Reference voltage generating circuit and method

Details Reference voltage generating circuit and method Reference voltage generating circuit and method

1997-04-08

1998-08-04

Hecker, Stuart N.

Electricity: power supply or regulation systems

Self-regulating

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

G05F 316

Patent

active

057899061

ABSTRACT:
A reference voltage generating circuit generates a predetermined reference voltage being independent of the dispersion of manufacturing lots. The base and the collector of a transistor is connected to a first input terminal of an operational amplifier. A resistor is connected between a second input terminal and an output terminal of the operational amplifier. The output terminal outputs the reference voltage. A voltage independent of the current amplification factor of the transistor is supplied to the input terminal of the operational amplifier via the transistor. And, a current independent of the reference voltage is supplied to the second input terminal of the operational amplifier. Here, a current proportional to the current amplification factor of the transistor is supplied to the base and the collector of the transistor.

REFERENCES:
patent: 5229710 (1993-07-01), Kraus et al.
patent: 5229711 (1993-07-01), Inoue
patent: 5352973 (1994-10-01), Audy
patent: 5568045 (1996-10-01), Koazechi
patent: 5610506 (1997-03-01), McIntrye
IEEE Journal of Solid-State Circuits, vol. SC-9, No. 6, pp. 388-393, Dec. 1974, A. Paul Brokaw, "A Simple Three-Terminal IC Bandgap Reference".

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