Interpolated variable gain amplifier with multiple active...

Details Interpolated variable gain amplifier with multiple active... Interpolated variable gain amplifier with multiple active...

2007-11-06

2007-11-06

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S282000, C330S284000, C330S085000

Reexamination Certificate

active

11089043

ABSTRACT:
An interpolated variable gain amplifier (VGA) utilizes multiple active feedback cells. The active feedback cells may be implemented as transconductance (gm) cells that replicate gm cells in the interpolated input stages.

REFERENCES:
patent: 5077541 (1991-12-01), Gilbert
patent: 5684431 (1997-11-01), Gilbert et al.
patent: 6445248 (2002-09-01), Gilbert
patent: 6621346 (2003-09-01), Nabicht et al.
patent: 7088179 (2006-08-01), Gilbert et al.
patent: 2005/0077958 (2005-04-01), Bunner
E. Brunner and B. Gilbert, Analog Devices, Inc.;The Active Feedback Amplifier—A Versatile Analog Building Block, Oct. 1994, pp. 131-136.
E. Brunner and B. Gilbert, Analog Devices, Inc.;The Active Feedback Amplifier—A Versatile Analog Building Block, Oct. 1994, pp. 131-136.

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