Low-power voltage reference

Details Low-power voltage reference Low-power voltage reference

2011-01-18

2011-01-18

Vu, Bao Q (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

C323S222000

Reexamination Certificate

active

07872455

ABSTRACT:
A circuit provides a voltage reference using very low power. It can also be used as a shut regulator for a quiescent current as low as 1.5 μA. It includes a transconductance amplifier, a gain stage, and a power transistor. One embodiment of this invention utilizes a work function difference between p+gate and n+gate to generate a predetermined reference voltage. In another embodiment of this invention, the predetermined reference voltage can be pre-adjusted using gate materials with different work functions.

REFERENCES:
patent: 5939867 (1999-08-01), Capici et al.
patent: 6259238 (2001-07-01), Hastings
patent: 7564225 (2009-07-01), Moraveji et al.

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