Selectable gain amplifier

Details Selectable gain amplifier Selectable gain amplifier

2006-11-07

2006-11-07

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With semiconductor amplifying device

Integrated circuits

C330S086000, C330S278000

Reexamination Certificate

active

07132893

ABSTRACT:
A selectable gain amplifier in a standard integrated circuit package configuration comprises an amplifier having an analog input, an output and a control input for selecting one of two or three possible gains for the operational amplifier. A plurality of selectable gain amplifiers may be in a standard integrated circuit package configuration, each having a gain control input for selection of the two or three possible gains. The gain control input replaces an inverting input of a standard operational amplifier and the analog input is the a non-inverting input of the operational amplifier or visa-versa. All other characteristics of the selectable gain amplifier may be the same or similar to a standard operational amplifier. The selectable gain amplifier(s) may be packaged in industry standard integrated circuit packages having standard pin-outs so that they may be compatible as replacement analog amplifiers for existing technology operational amplifier integrated circuit packages.

REFERENCES:
patent: 5721513 (1998-02-01), Yuasa
patent: 6020785 (2000-02-01), Allen et al.
patent: 6693490 (2004-02-01), Manapragada et al.
patent: 6847904 (2005-01-01), Blake et al.
patent: 6952132 (2005-10-01), Bhattacharjee et al.

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