Reference current generator circuit

Details Reference current generator circuit Reference current generator circuit

1986-12-09

1987-08-04

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

307455, G05F 316

Patent

active

046848800

ABSTRACT:
A reference current generator circuit for generating a reference current I.sub.R that is independent of variations in the base-to-emitter junction voltages V.sub.BE of the transistors in the generator circuit. Applying the reference current I.sub.R to a current source transistor Q.sub.CS in a CML circuit generates a collector current I.sub.O, output by the current source transistor Q.sub.CS, that is independent of the variations in the base-to-emitter junction voltages V.sub.BE of both circuits. This produces a CML output voltage V.sub.O that is nearly temperature independent. Combining the reference current generator circuit with a current source transistor provides a constant and stable current source that can be utilized in a variety of electronic circuit applications.

REFERENCES:
patent: 4302719 (1981-11-01), Mattfeld
patent: 4629913 (1986-12-01), Lechner
patent: 4644194 (1987-02-01), Birrittella et al.

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