ANALOG-TO-DIGITAL CONVERTER CIRCUIT, METHOD OF DRIVING FULLY DIFFERENTIAL CIRCUIT, AND INTERFACE CIRCUIT FOR DRIVING FULLY DIFFERENTIAL CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide an interface circuit for driving a fully differential circuit.SOLUTION: The interface circuit for driving a fully differential circuit has a first circuit configured to decrease a voltage at an output thereof in response to an increase in an average value of a first input voltage and a second input voltage. 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. 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. An impedance ratio of the first network is substantially matched to an impedance ratio of the second network.