Patent ID: 7675359

Claim:
A switch-around low noise amplifier device, comprising: an input for receiving an input signal; an output for outputting an output signal; a first low noise amplifier transistor coupled between the input and the output; a bypass switch circuit coupled between the input and the output; a current mirror circuit operatively connected to the first low noise amplifier transistor to control a current flowing through the low noise amplifier transistor; a source follower switch operatively connected to the current mirror circuit to selectively turn on and off a current flowing through the current mirror circuit in response to a mode select signal; and a driver adapted to selectively turn on and off the bypass switch circuit in response to the mode select signal, wherein the first low noise amplifier transistor has first and second terminals and a control terminal, wherein the first low noise amplifier transistor receives the input signal at its control terminal, and wherein one of the first and second terminals is directly connected to a supply voltage.