Patent ID: 7280005

Claim:
Circuitry having an AC coupling network comprising: two input nodes (e.g., 302 a and 302 b ) and two output nodes (e.g., 304 a and 304 b ); a first resistor (e.g., 310 a ) connected between a first one of the two output nodes (e.g., 304 a ) and a first common-mode voltage node (e.g., Vcm 1 ); a second resistor (e.g., 310 b ) connected between a second one of the two output nodes (e.g., 304 b ) and a second common-mode voltage node (e.g., Vcm 2 ); a first capacitance (e.g., 306 a ) connected between a first one of the two input nodes (e.g., 302 a ) and the first output node; a second capacitance (e.g., 308 a ) connected between the first input node and the second output node; a third capacitance (e.g., 308 b ) connected between a second one of the two input nodes (e.g., 302 b ) and the first output node; and a fourth capacitance (e.g., 306 b ) connected between the second input node and the second output node.