Apparatus and methods for input bias current reduction

A method of reducing input bias current, the method comprising:

• providing a differential input voltage between a first input terminal and a second input terminal of an electronic circuit, wherein the electronic circuit comprises a plurality of input switches and an input circuit;
• controlling the plurality of input switches using one or more clock signals, wherein the plurality of input switches comprises a first input switch electrically connected between the first input terminal and the first input of the input circuit, and a second input switch electrically connected between the second input terminal and the second input of the input circuit;
• and
• compensating for charge injected by the plurality of input switches associated with at least one transition of the one or more clock signals using a charge compensation circuit.

An apparatus comprising:

• a first input terminal and a second input terminal;
• an input circuit including a first input and a second input;
• a plurality of input switches controlled by one or more clock signals, wherein the plurality of input switches comprises:
• a first input switch electrically connected between the first input terminal and the first input of the input circuit, and
• a second input switch electrically connected between the second input terminal and the second input of the input circuit;
• and
• a means for compensating charge injected by the plurality of input switches.