Band gap current reference circuit

Details Band gap current reference circuit Band gap current reference circuit

1996-03-19

1997-12-02

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

323308, G05F 326

Patent

active

056940327

ABSTRACT:
A circuit for delivering an accurate reference current independent of operating frequency that is implementable on-chip and that is relatively insensitive to process and temperature variations. A frequency source controls a rate of charge transfer via a switched capacitor to generate a constant current over different frequencies. A complimentary doped FET provides a band gap voltage imposed over a known resistance to generate the output current.

REFERENCES:
patent: 5012133 (1991-04-01), Hughes
patent: 5180966 (1993-01-01), Sugawara et al.
patent: 5408174 (1995-04-01), Leonowich

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