Patent ID: 7764115
Filing Date: 2010-07-27
Classification: G05F,H03F

Abstract:
1. An apparatus for providing an input common mode voltage in a receiver circuit configured for coupling to a transmission line through a matching resistor, wherein the apparatus comprises a current conveyor circuit, the current conveyor circuit comprising: a P-type metal oxide semiconductor transistor having (1) a source coupled to an operating voltage, (2) a drain coupled to a current source, and (3) a gate configured to be coupled to the transmission line through the matching resistor; and an N-type metal oxide semiconductor transistor having (1) a source configured to be coupled to the transmission line through the matching resistor and coupled to the gate of the P-type metal oxide semiconductor transistor, and (2) a gate coupled to the drain of the P-type metal oxide semiconductor transistor and to the current source.