TRANSCONDUCTOR HAVING STRUCTURE OF CROSSING PAIRS

摘要

PROBLEM TO BE SOLVED: To provide a transconductor which widens an operation frequency range while maintaining linearity and is operated even under a high voltage. SOLUTION: The transconductor having a structure of crossing pairs is composed of first and second MOS transistors mutually connecting their drain terminals and their source terminals in series to a voltage source, a first bipolar transistor connecting its collector terminal with the output current terminal of a current source and connecting its emitter terminal with the gate terminal of said second MOS transistor, a second bipolar transistor connected in series to the first bipolar transistor and connecting its base terminal to a node between said first MOS transistor and said second MOS transistor, and a third MOS transistor connecting its gate terminal to an external signal input terminal and connecting its drain terminal to the emitter terminal of said second bipolar transistor. COPYRIGHT: (C)2003,JPO