Switchable operational amplifier circuit

Details Switchable operational amplifier circuit Switchable operational amplifier circuit

2007-02-27

2007-02-27

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S258000, C330S261000

Reexamination Certificate

active

10488814

ABSTRACT:
An amplifier circuit in particular configured as an operational transconductance amplifier has signal paths switched in parallel to the individual transversal branches or signal paths, which can be alternatively activated and deactivated with the aid of suitable switching means (1, 2), so that without essentially changing the dynamic characteristics of the amplifier circuit switching over is possible by activating these parallel-switched additional signal paths or the transistors (M3.2–M12.2) contained in these from normal operation (A) into an operation (B) with, for example, a higher clock frequency in comparison to normal operation or for operating with higher loads in comparison to normal operation.

REFERENCES:
patent: 4820998 (1989-04-01), Roessler et al.
patent: 5541554 (1996-07-01), Stengel et al.
patent: 5894245 (1999-04-01), Cho
patent: 5923216 (1999-07-01), Pennock
patent: 6373337 (2002-04-01), Ganser
patent: 695 17 706 (2000-10-01), None
patent: 0 806 080 (1995-05-01), None
patent: 0 899 871 (1998-08-01), None
patent: 1 067 679 (2000-06-01), None

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