Method for adaptive biasing of fully differential gain...

Details Method for adaptive biasing of fully differential gain... Method for adaptive biasing of fully differential gain...

2008-07-24

2010-12-14

Nguyen, Khanh V (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S253000

Reexamination Certificate

active

07852159

ABSTRACT:
An adaptive biasing technique improves fully differential gain boosted operational amplifiers transient characteristics and reduces power consumption. An adaptive biasing module includes a bias generation module and a bias replication module. The bias generation module generates a first control signal (VCMNB) and the first control signal is applied as an output common mode of a differential booster (inside the bias replication module). The bias replication module is coupled to the bias generation module for equalizing a common mode of the differential booster with the first control signal (VCMNB).

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patent: 6353361 (2002-03-01), Sun
patent: 6362688 (2002-03-01), Au
Bult, et al., “A Fast-Settling CMOS Op Amp for SC Circuits with 90-dB DC Gain,” IEEE Journal of Solid-State Circuits, vol. 25, No. 6, Dec. 1990.

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