Agere Systems Inc.

Robert J Kapuschinsky

Lane Allen Smith

Gregory W Sheets

Joseph Anidjar

Jinghong Chen

Christopher John Abel

Gary D Polhemus

Yasser Ahmed

Samuel Khoo

Ashok Khandelwal

An amplifier having DC offset compensation includes at least one input node and a pair of differential output nodes, a biasing circuit coupled to the input node; and a plurality of current sources. Selected ones of said current sources are coupled to the input node to adjust a DC voltage at the input node to provide DC offset compensation for the amplifier

Analog amplifier having DC offset cancellation circuit and method of offset cancellation for analog amplifiers

Disclosed is a system and method for testing a dual mode interface. The dual mode interface includes a first strobe circuit and a second strobe circuit configured to be inoperable during a first operational mode of the interface and operable during a second operational mode of the interface. The dual mode interface also includes a first data circuit and a second data circuit configured to be operable during the first operational mode and the second operational mode. The dual mode interface also includes a signal line connecting an output of the second strobe circuit with an input of the first strobe circuit and a switch element configured to activate said signal line in response to receipt of a test signal.

Method and apparatus for testing a dual mode interface

Methods and apparatus are provided for programmable active inductance. The disclosed active inductor devices provide a tunable bandwidth with improved linearity. The disclosed active inductors have a variable frequency response corresponding to a variable inductance of the active inductor. The active inductor comprises a variable resistive circuit having an effective resistance, wherein the variable resistive circuit is comprised of at least one resistor that can be selectively bypassed in the variable resistive circuit to vary the effective resistive. The active inductor has an inductance that can be varied by varying the effective resistance.

Methods and apparatus for programmable active inductance

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Hazleton, PA, United States of America

Robert J Kapuschinsky