Integrated circuit single ended-to-differential amplifier

An integrated circuit comprising:

• a filter circuit configured to balance an common-mode voltage between first and second inputs of an amplifier circuit, the filter circuit including:
• a common-mode input configured to receive the common-mode voltage;
• a first impedance network coupled between the common-mode input and the first input of the amplifier circuit;
• and
• a second impedance network coupled between the common-mode input and the second input of the amplifier circuit.

A method comprising:

• balancing a common-mode voltage between first and second inputs of an amplifier circuit using a filter circuit having a low frequency pole below 1 hertz, and first and second impedance networks, the balancing using a integrated circuit including the amplifier circuit and the filter circuit;
• wherein the balancing includes:
• receiving the common-mode voltage at an common-mode input of the filter circuit;
• filtering the common-mode voltage to the first input of the amplifier circuit using the first impedance network;
• and
• filtering the common-mode voltage to the second input of the amplifier circuit using the second impedance network.