Translinear variable gain amplifier

Details Translinear variable gain amplifier Translinear variable gain amplifier

2006-11-07

2006-11-07

Callahan, Timothy P. (Department: 2816)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S252000, C330S261000, C327S103000

Reexamination Certificate

active

07132889

ABSTRACT:
A translinear variable-gain amplifier. The translinear variable gain amplifier receives a differential input voltage and produces a differential output current having a selected gain. The amplifier comprises a buffer amplifier that receives the differential input voltage and produces a differential input current. The amplifier further comprises a translinear gain cell coupled to receive the differential input current and produce the differential output current. The gain cell includes a first adjustable bias source that operates to set a linear input range of the gain cell, and a second adjustable bias source that operates to set a gain value of the gain cell.

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