Differential low frequency noise suppression technique for a...

Details Differential low frequency noise suppression technique for a... Differential low frequency noise suppression technique for a...

2009-06-01

2010-11-16

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S149000

Reexamination Certificate

active

07834697

ABSTRACT:
Disclosed is a common mode feedback circuit for a differential amplifier that eliminates the effects of low frequency noise. A modulator is placed in a common mode feedback loop that modulates the feedback loop signal at a predetermined frequency to up-convert the low frequency noise. The predetermined frequency may be selected to be above the operating range of the downstream circuitry. In addition, a low pass filter can be used to eliminate the up-converted noise.

REFERENCES:
patent: 7071780 (2006-07-01), Van Zanten
patent: 7733179 (2010-06-01), Forejt
U.S. Appl. No. 12/465,521, filed May 13, 2009, 2009, by Ronald J. Lipka.
“A Frequency Compensation Scheme for LDO Voltage Regulators” Chava, Chaitanya K. and Silva-Martinez, Jose, IEEE Transactions on Circuits & Systems, vol. 51, No. 6, Jun. 2004.

Affiliated with

Also associated with

Rating

Differential low frequency noise suppression technique for a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Differential low frequency noise suppression technique for a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential low frequency noise suppression technique for a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4223962