Low-voltage differential signal receiver circuitry

摘要

A receiver circuit for a differential input signal, may include a divider bridge having first and second ends, a midpoint therebetween, and intermediate points on either side of the midpoint. The divider bridge is coupled to receive the differential input signal at the first and second ends. A current generator is coupled to the divider bridge and configured to generate compensation currents associated respectively with components of the differential input signal. The divider bridge is configured to receive the compensation currents respectively at the intermediate points, and generate a compensated differential signal between the intermediate points.

主权项

1. A receiver circuit for a differential input signal, comprising:
a divider bridge having first and second ends, a midpoint therebetween, and a plurality of intermediate points on either side of the midpoint, said divider bridge coupled to receive the differential input signal at the first and second ends; and a current generator coupled to said divider bridge and configured to generate a plurality of compensation currents based upon a signal at the midpoint, the plurality of compensation currents being associated respectively with a plurality of components of the differential input signal, said current generator comprising
a differential amplifier coupled to the midpoint in an integrator configuration, having an input, and configured to receive a reference level on the input, anda plurality of transconductors configured to be controlled by the differential amplifier and generate the plurality of compensation currents; said divider bridge being configured to receive the plurality of compensation currents respectively at the plurality of intermediate points, and generate a compensated differential signal between the plurality of intermediate points.