Programmable low drift reference voltage generator

Details Programmable low drift reference voltage generator Programmable low drift reference voltage generator

1997-04-18

1998-12-22

Riley, Shawn

Electricity: power supply or regulation systems

Self-regulating

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

323314, 323317, 327396, G05F 316

Patent

active

058523600

ABSTRACT:
A reference voltage generating method and circuit is disclosed where the output can be programmably calibrated for minimum temperature drift. Output calibration is performed by adjusting a value of resistance of a resistor in a band-gap circuit. Digitally programmable switches are used to incrementally reduce or increase the value of the target resistor. The control circuit according to the present invention is also designed such that it tracks variations in process and temperature.

REFERENCES:
patent: 5122680 (1992-06-01), Stakely et al.
patent: 5281906 (1994-01-01), Thelen, Jr.
patent: 5650739 (1997-07-01), Hui et al.

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