Interface circuit for driving fully-differential circuits

摘要

An interface circuit (101) for driving a fully-differential circuit (102) has a first circuit configured to decrease the voltage at its output in response to an increase in an average value of first and second input voltages. A first network receives the first input voltage and the output voltage of the first circuit to provide a first output voltage for driving the fully-differential circuit (102). A second network receives the second input voltage and the output voltage of the first circuit to provide a second output voltage for driving the fully-differential circuit (102). An impedance ratio of the first network is substantially matched to an impedance ratio of the second network.