Broadcom Corporation

Avago Technologies International Sales Pte. Limited

Stephen C Au

Dandan Li

Long Bu

Hung-Ming Chien

Vikram Magoon

Choong Yul Cha

Weifeng Feng

A synchronous switching regulator circuit for supply regulation of a switching circuit includes a pass transistor to couple the switching circuit to a supply voltage. The synchronous switching regulator circuit further includes a switch that is operable to synchronously turn off a flow of a supply current through the pass transistor. The switching circuit can be controlled by a switching signal, and the switch can operate in synchronization with the switching circuit.

Synchronous switching regulator circuit

In one embodiment, a method comprising during a first calibration instance, converting at a first transconductance stage a first output voltage from a power amplifier of a transceiver to a first set of current signals; and during a second calibration instance not overlapping the first calibration instance, converting at a second transconductance stage a second output voltage from the power amplifier to a second set of current signals.

Calibration for power amplifier predistortion

A low noise amplifier includes a programmable input stage, having a first gain that is programmable based on a first control signal. A programmable cascode stage, has a second gain that is programmable based on a second control signal. A programmable resistor stage controls the quality of a resonant tank circuit, based on a third control signal.

Programmable low noise amplifier and methods for use therewith

A method and apparatus in an integrated circuit radio transceiver are operable to apply a modified control signal to drive logic that includes a plurality of first devices having a first threshold voltage and a first gate oxide thickness that are both greater than a second threshold voltage and a second gate oxide thickness for a greater second plurality of devices within the integrated circuit radio transceiver. The transceiver therefore generates a first control signal having a first magnitude operable to drive logic that includes a plurality of devices having a second threshold voltage and applies the first control signal to a level shifter to produce the modified control signal.

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San Diego, CA, United States of America

Stephen C Au