Low-voltage cascaded current mirror circuit with improved power

Details Low-voltage cascaded current mirror circuit with improved power Low-voltage cascaded current mirror circuit with improved power

1995-03-03

1996-04-30

Nguyen, Matthew V.

Electricity: power supply or regulation systems

Self-regulating

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

G05F 316

Patent

active

055128165

ABSTRACT:
A circuit technique for improving power supply rejection of current mirror circuits. An input reference current is mirrored through a cascade of current mirror circuits whereby an error current is generated that represents the amount of current variation caused by power supply variations. The error current is then replicated into a current summing circuit which cancels out the effect of the error current. The output current is thus substantially independent of power supply variations.

REFERENCES:
patent: 4503381 (1985-03-01), Bowers
patent: 4525683 (1985-06-01), Jason
patent: 4647841 (1987-03-01), Miller
patent: 5089769 (1992-02-01), Petty et al.
patent: 5179355 (1993-01-01), Harvey
patent: 5245273 (1993-09-01), Greaves et al.
patent: 5420542 (1995-05-01), Harvey

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