Feedback circuit to compensate for process and power supply vari

Details Feedback circuit to compensate for process and power supply vari Feedback circuit to compensate for process and power supply vari

1998-06-12

1999-09-07

Nguyen, Matthew

Electricity: power supply or regulation systems

Self-regulating

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

327541, G05F 156

Patent

active

059492287

ABSTRACT:
In according with the principles of the present invention, a feedback circuit to compensate for process, temperature, and power supply variations in a typical integrated chip is provided. The feedback circuit increases the accuracy and functionality of an integrated chip by generating an output feedback current that is compensated for process, temperature and power supply variations. The feedback circuit comprises a top current mirror circuit, a bottom current mirror circuit, and a sensory circuit connected to the top current mirror circuit. The sensory circuit continuously senses the variations in the process, temperature and power supply and provides the feedback to top current mirror circuit. The top current mirror adjusts its parameters accordingly and therefore an output feedback current is generated which has necessary compensations for the process, temperature and power supply variations.

REFERENCES:
patent: 4057743 (1977-11-01), Limberg
patent: 5282094 (1994-01-01), Ngo
patent: 5351012 (1994-09-01), Toumazou
patent: 5594382 (1997-01-01), Kato et al.
patent: 5694033 (1997-12-01), Wei et al.

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