Voltage reference support circuit

Details Voltage reference support circuit Voltage reference support circuit

1997-11-14

1999-02-02

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327513, 327543, 327546, 323314, G05F 146, G05F 302

Patent

active

058670564

ABSTRACT:
A reference voltage support circuit that interfaces with a variety of reference voltage circuit types including bandgap references, zener references, and reference amplifiers with only the interconnection details being different. The reference voltage support circuit contains a voltage source to produce a stabilized supply current for the reference voltage circuit and a unity gain voltage inverter to produce both positive and negative reference voltages from a unipolar reference voltage circuit. The current source and the unity gain voltage inverter both employ ratiometrically scaled resistor networks coupled to the negative and positive reference voltages for high stability over time and temperature.

REFERENCES:
patent: 5307315 (1994-04-01), Oowaki et al.
patent: 5315231 (1994-05-01), Linder et al.
patent: 5319303 (1994-06-01), Yamada
patent: 5329184 (1994-07-01), Redfern
patent: 5506541 (1996-04-01), Herndon

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