Integrated circuit for generating a reference voltage

Details Integrated circuit for generating a reference voltage Integrated circuit for generating a reference voltage

1981-04-17

1982-12-07

Pellinen, A. D.

Electricity: power supply or regulation systems

Self-regulating

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

323907, 330296, G05F 320

Patent

active

043629857

ABSTRACT:
A circuit for generating a reference voltage including a first transistor and a second transistor of which the bases being commonly connected together. The area of the emitter of the first transistor being smaller than the area of the emitter of the second transistor, the emitter of the first transistor being connected to the ground, and the emitter of the second transistor being connected to the ground via a first resistor. The circuit also includes a current supply means which supplies an equal current to the collectors of the first and second transistors and a second resistor which is connected between an output terminal and a connection point of the commonly connected bases of the first and second transistors. The circuit additionally includes a current generator circuit which is connected between the connection point of the commonly connected bases and the ground to produce a current which is proportional to the emitter current of the first transistor or the second transistor, such that a constant voltage is generated at the output terminal.

REFERENCES:
patent: Re30586 (1981-04-01), Brokaw
patent: 3794861 (1974-02-01), Bernacchi
patent: 3886435 (1975-05-01), Steckler
patent: 4091321 (1978-05-01), Hanna
patent: 4122403 (1978-10-01), Cave
patent: 4230980 (1980-10-01), Sano et al.
patent: 4283674 (1981-08-01), Kominami et al.
Brokaw, "A Simple Three-Terminal IC Bandgap Reference", IEEE Journal of Solid-State Circuits, vol. SC-9, No. 6, Dec. 1974, pp. 388-393.

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