Bias circuit with increased power supply rejection

Details Bias circuit with increased power supply rejection Bias circuit with increased power supply rejection

2006-10-10

2009-11-24

Nguyen, Khanh V (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including d.c. feedback bias control for stabilization

C330S259000, C330S261000, C330S285000, C330S296000

Reexamination Certificate

active

07622994

ABSTRACT:
According to one exemplary embodiment, a power supply rejection bias circuit includes a first amplifier coupled to a second amplifier, where the first amplifier receives a reference voltage, and a feedback voltage of the bias circuit. The bias circuit further includes an output transistor driven by the output of the second amplifier, where the output transistor provides the output of the bias circuit and the feedback voltage. The bias circuit further includes a feedback resistor coupled between an input and an output of the second amplifier. According to this embodiment, the output of the second amplifier forms a non-dominant pole of the bias circuit and the output of the bias circuit forms a dominant pole of the bias circuit, thereby increasing power supply rejection of the bias circuit.

REFERENCES:
patent: 5945818 (1999-08-01), Edwards
patent: 6465994 (2002-10-01), Xi
patent: 6885244 (2005-04-01), Shor
patent: 2007/0018621 (2007-01-01), Mok et al.

Affiliated with

Also associated with

Rating

Bias circuit with increased power supply rejection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bias circuit with increased power supply rejection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bias circuit with increased power supply rejection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4059548