DEVICE AND CIRCUIT FOR AMPLIFYING BASEBAND SIGNALS, COMBINED WITH A SWITCHED CAPACITOR TYPE COMMON MODE FEEDBACK CIRCUIT

摘要

PURPOSE: A device and a circuit for amplifying baseband signals are provided to reduce power consumption and to extend the battery usage time of a wireless terminal by using a switched capacitor type common mode feedback circuit.;CONSTITUTION: A CMFB(Common Mode Feedback) circuit is composed of a plurality of transistors(300), a first capacitor(315), and a second capacitor(320). The CMFB circuit is classified into four segments connected to a drain of a first transistor and a source of a second transistor. Two segments are connected by two capacitors, and the other two segments are connected by the other two capacitors. Two segments connected to two capacitors are serially connected.;COPYRIGHT KIPO 2013