Asymmetric correction circuit with negative resistance

An apparatus comprising:

• an amplifier configured to receive a differential asymmetric signal comprising a first asymmetric signal and a second asymmetric signal;
• a first resistance coupled to a first input node of the amplifier and to the first asymmetric signal;
• a second resistance coupled to the first asymmetric signal and the first input node;
• a first switch configured to be controlled during a first interval to couple the second resistance to first resistance to increase a gain of the amplifier to correct the first asymmetric signal at a first output node of the amplifier;
• a third resistance coupled to the second asymmetric signal;
• and
• a second switch configured to be controlled during a second interval to couple the third resistance to the first resistance to decrease the gain of the amplifier to correct the asymmetric signal at the first output node of the amplifier, wherein the second asymmetric signal is of an opposite polarity to the first asymmetric signal.

A method comprising:

• coupling a first resistance to a first input node of an amplifier and to a first asymmetric signal;
• coupling a second resistance to the first asymmetric signal and the first input node;
• during a first interval, coupling the second resistance to first resistance to increase a gain of the amplifier to correct the first asymmetric signal at a first output node of the amplifier;
• coupling a third resistance to a second asymmetric signal;
• and
• during a second interval, coupling the third resistance to the first resistance to decrease the gain of the amplifier to correct the first asymmetric signal at the first output node, wherein the second asymmetric signal is of an opposite polarity to the first asymmetric signal.