Patent ID: 8019019

Claim:
A receiver, comprising: a first input port; a second input port; a first input capacitor; a second input capacitor; a differential amplifier having a first differential amplifier input coupled to the first input port through the first input capacitor and a second differential amplifier input coupled to the second input port through the second input capacitor; a level detector, the level detector being connected through a first impedance device to the first input port of the receiver, and connected through a second impedance device to the second input port of the receiver; a compensation control circuit connected to the first differential amplifier input and connected to the second differential amplifier input; a common mode bias circuit producing a common mode voltage; a first switch controlled by the compensation control circuit to selectively couple one of the common mode voltage and a first voltage to the first differential amplifier input; and a second switch controlled by the compensation control circuit to selectively couple one of the common mode voltage and a second voltage to the second differential amplifier input.