ASIC with switching noise reduction

A method, comprising the steps of:

• receiving a plurality of analog bioelectric signals in respective channels;
• multiplexing the bioelectric signals, in respective selection events, wherein the selection events comprise making a first connection with a reference voltage and thereafter breaking the first connection and making a second connection with one of the bioelectric signals;
• outputting the multiplexed bioelectric signals to an analog-to-digital converter,
• wherein making the first connection and making the second connection are accomplished by placing a double pole double throw switch in a first position and a second position, respectively;
• and
• further comprising connecting a Wilson central terminal to a first input of a differential amplifier and connecting one of the bioelectric signals to a second input of the differential amplifier, and linking first and second outputs of the differential amplifier to the double pole double throw switch.