Low DC power rail-to-rail buffer amplifier for liquid...

Details Low DC power rail-to-rail buffer amplifier for liquid... Low DC power rail-to-rail buffer amplifier for liquid...

2006-11-13

2008-08-12

Choe, Henry K (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S261000

Reexamination Certificate

active

07411452

ABSTRACT:
A low DC power rail-to-rail buffer amplifier is suitable for liquid crystal display application. The buffer amplifier comprises: a dc bias stage, a pair of complementary differential amplifiers, a second stage amplifier, and output stage. The dc bias stage is used for the dc bias of the differential amplifiers and the second stage to obtain a rail-to-rail operation. This buffer amplifier can be operated in the power supply ranges of 5.5 V to the breakdown voltage. Simulated results show that the circuit draws only 5.3 μA static current.

REFERENCES:
patent: 4797631 (1989-01-01), Hsu et al.
patent: 6778014 (2004-08-01), Rennig
patent: 7310017 (2007-12-01), Etou
patent: 7315210 (2008-01-01), Nguyen

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