Patent ID: 8090334
Filing Date: 2012-01-03
Classification: H03F,H03G,H04B

Abstract:
1. A communication device, comprising a transceiver having at least one programmable gain amplifier, the at least one programmable gain amplifier comprising: a current source coupled to a first voltage source; a pair of amplifying transistors coupled together and to the current source; a first plurality of load transistors coupled between a first amplifying transistor of the pair of amplifying transistors and a second voltage source; and a second plurality of load transistors coupled between a second amplifying transistor of the pair of amplifying transistors and the second voltage source; and a logic circuit that provides a logic output to a gate of selected load transistors in the first plurality of load transistors and a gate of selected load transistors in the second plurality of load transistors to set a load applied to the programmable gain amplifier.