Granted Patent B2

US 7,132,889 · App. 10/920,694 · Granted Nov 7, 2006

Abstract

Claims (14)

1. A translinear variable gain amplifier that is operable to provide an adjustable linear input range and gain, the amplifier comprising:

means for receiving a differential input voltage and producing a differential current; and

a translinear gain cell coupled to the receive the differential current and produce a differential output current, the gain cell comprising:

a first adjustable bias source for setting a linear input range of the gain cell; and

means for setting a gain value of the gain cell.

2. The translinear variable gain amplifier of claim 1 , wherein the means for receiving comprises first and second transistors, and first and second resistors, that operate to convert the differential input voltage to the differential current.

3. The translinear variable gain amplifier of claim 1 , wherein the differential output current is coupled to a second translinear variable gain amplifier.

4. The translinear variable gain amplifier of claim 1 , wherein means for setting a gain value comprises a second adjustable bias source.

5. The translinear variable gain amplifier of claim 1 , wherein the gain cell includes a transistor differential pair coupled to the second adjustable bias source.

6. In a communication transceiver, a translinear variable gain amplifier, the amplifier comprising:

means for receiving a differential input voltage and producing a differential current; and

a translinear gain cell coupled to the receive the differential current and produce a differential output current, the gain cell comprising:

a first adjustable bias source for setting a linear input range of the gain cell; and

means for setting a gain value of the gain cell.

Assignments (7)