Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2011-03-15
2011-03-15
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
Reexamination Certificate
active
07906994
ABSTRACT:
A system and method for a fast stabilizing output buffer. A differential driver circuit is provided with an amplifier stage for receiving a differential input signal and generating a differential output based upon the input signal. The differential output has a corresponding common-mode (CM) voltage level typically based upon a value half of the power supply. A common-mode feedback buffer (CMFB) stage detects a change in the CM voltage level and recovers the CM voltage level to its desired value within a very fast settling time based upon a very high bus frequency. The CMFB stage utilizes a topology comprising only a single device. In one embodiment, this single device is a nmos transistor utilized as a transimpedance stage. Stability is provided by a circuit biasing stage and a shunting capacitor within the CMFB stage.
REFERENCES:
patent: 5381112 (1995-01-01), Rybicki et al.
patent: 6946907 (2005-09-01), Tai
patent: 7352207 (2008-04-01), Garlapati et al.
patent: 7514972 (2009-04-01), Dvorak et al.
patent: 7564306 (2009-07-01), Lee et al.
patent: 7609097 (2009-10-01), Leonowich et al.
patent: 7675330 (2010-03-01), Chen et al.
patent: 7696793 (2010-04-01), Sunairi
patent: 2003/0085736 (2003-05-01), Tinsley et al.
patent: 2007/0024320 (2007-02-01), de Laurentiis et al.
patent: 2007/0279105 (2007-12-01), Sunairi
patent: 2008/0136464 (2008-06-01), Kim et al.
patent: 2008/0238521 (2008-10-01), Huang
patent: 2009/0261866 (2009-10-01), Shibata
patent: 2010/0127736 (2010-05-01), Dixit et al.
International Search Report and Written Opinion for Application No. PCT/US2010/025208, mailed May 7, 2010.
Edgar Sánchez-Sinencio; “Common-Mode Feedback Techniques: A Tutorial”; Texas A&M University; Feb. 2005; 46 pages.
Almo Khareem E
Donovan Lincoln
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Rankin Rory D.
Standard Microsystems Corporation
LandOfFree
Fast common mode feedback control for differential driver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fast common mode feedback control for differential driver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast common mode feedback control for differential driver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2722128