Rapid start-up circuit for voltage reference and method of opera

Details Rapid start-up circuit for voltage reference and method of opera Rapid start-up circuit for voltage reference and method of opera

1996-08-28

1998-05-12

Wambach, Margaret Rose

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327142, 327538, G05F 110

Patent

active

057511829

ABSTRACT:
A rapid start-up voltage reference (8) is provided. The rapid start-up voltage reference (8) includes a voltage reference circuit (10) operable responsive to a shut-down signal ENABLE. The shut-down signal has an enable state and a disable state. The voltage reference circuit (10) has a feedback loop (12) which has a first node (NODE 1). The voltage reference circuit (10) is operable to produce an output reference voltage (V.sub.REF) when the shut-down signal is in the enable state. A rapid start-up circuit (14) is coupled to the first node (NODE 1) and to a power supply node (V.sub.cc). The rapid start-up circuit (14) includes a capacitor (16) and is operable responsive to the shut-down signal to charge the capacitor (16) when the shut-down signal is in the disable state and to connect the capacitor (16) to the first node (NODE 1) when the shut-down signal is in the enable state.

REFERENCES:
patent: 5488329 (1996-01-01), Ridgers

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