APPARATUS AND METHOD FOR REDUCING FLICKER NOISE OF CMOS AMPLIFIER

摘要

A method and an apparatus for reducing a flicker noise in a CMOS amplifier are provided to improve a signal reception performance of a communication system by processing continuous signals irrespective of reception timings of 2-phase clock signals. An apparatus for reducing a flicker noise in a CMOS(Complementary Metal Oxide Semiconductor) amplifier includes a load circuit(610), a signal input circuit(620), and a switch-bias circuit(630). The load circuit is connected to a first voltage source. The signal input circuit is connected to the load circuit and receives two input signals. The switch-bias circuit is connected between a second voltage source and the signal input circuit. The signal input circuit includes two pairs of MOSFETs(Metal Oxide Semiconductor Field Effect Transistors), which receive two input signals simultaneously. The switch-bias circuit receives the input signals, amplifies the received signals, and outputs the amplified signal through two contact nodes, where the MOSFETs are connected to the load circuit.