Patent ID: 6707322
Filing Date: 2004-03-16
Classification: H02M,H03F

Abstract:
A transconductor for generating a current corresponding to an input voltage, the transconductor having crossing pairs structure, said transconductor comprising:a first and a second MOS (Metal-Oxide Semiconductor) transistors mutually connected in series to a voltage source; a first bipolar transistor connected to a current source, a collector terminal of the first bipolar terminal being connected to an output current terminal, an emitter terminal of the first bipolar terminal being connected to a gate terminal of the second MOS transistor; a second bipolar transistor connected in series to the first bipolar transistor, a base terminal of the second bipolar transistor being connected to a node between the first MOS transistor and the second MOS transistor; and a third MOS transistor, a gate terminal of the third MOS transistor being connected to an input terminal for a signal from outside, a drain terminal of the third MOS transistor being connected to an emitter terminal of the second bipolar transistor.