SCALED IMPEDANCE REPLICA FOR ECHO ATTENUATION IN DIGITAL TRANSMISSION SYSTEMS

摘要

A device for echo attenuation in a digital transmission system comprises an impedance replica of the transmission path, wherein the impedance replica consists of a terminating resistor replica, a transformer replica and a transmission line replica. Further the device can comprise an additional bridged tap replica. The transformer replica and the bridged tap replica are located on chip and the main transformer inductance replica and all components of the bridged tap replica are made variable so that a software setting is possible.