Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2008-05-06
2008-05-06
Pascal, Robert J. (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C327S309000
Reexamination Certificate
active
07368991
ABSTRACT:
System and method for limiting an output signal of a differential amplifier. A preferred embodiment comprises a limit sense amplifier configured to detect when the output exceeds a permitted limit, a common mode bias current unit configured to increase a signal gain of a common mode amplifier in the differential operational amplifier when the limit sense amplifier detects that the output exceeded the permitted limit, and an output stage bias current unit configured to fix the output at a level substantially equal to the specified limit when the limit sense amplifier detects that the output exceeded the permitted limit. The clamping is achieved by changing the operation of circuitry within the differential amplifier and results in a smoother clamping that helps to maintain stable operation.
REFERENCES:
patent: 5144171 (1992-09-01), Huard
patent: 5283484 (1994-02-01), Brehmer et al.
patent: 5721504 (1998-02-01), Sato
patent: 6304141 (2001-10-01), Kennedy et al.
patent: 6525607 (2003-02-01), Liu
patent: 6891408 (2005-05-01), Nishizono
patent: 6924702 (2005-08-01), Chen
patent: 7176731 (2007-02-01), Baez et al.
Brady III Wade J.
Flanagan Krista M
Pascal Robert J.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
LandOfFree
System and method for clamping a differential amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for clamping a differential amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for clamping a differential amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2772153