Differential signal conditioner with common mode voltage error compensation

A method for providing differential signal conditioning with common mode voltage compensation, the method comprising:

• receiving, at a differential amplifier during a first cycle, the reference CMV signal and outputting a CMV error value;
• receiving, at a CMV measurement circuit during the first cycle, the reference CMV signal from the signal multiplexer and outputs a confirmation value;
• receiving, at the differential amplifier during a second cycle, the differential input signal and outputting an amplified difference signal;
• receiving, at the CMV measurement circuit during the second cycle, the differential input signal from the signal multiplexer and output a CMV compensation value;
• receiving, at a processing element, the CMV error value, the amplified difference signal, the CMV compensation value, and a differential amplifier gain value;
• and
• generating a CMV compensated output based on the CMV error value, the amplified difference signal, the CMV compensation value, and the differential amplifier gain value.

A system for differential signal conditioning with common mode voltage compensation, the system comprising:

• a differential amplifier device that receives a reference CMV signal and outputs a CMV error value during a first cycle, and receives a differential input signal and outputs an amplified difference signal during a second cycle;
• a measurement device that receives the reference CMV signal and outputs a confirmation value during the first cycle, and receives the differential input signal, and outputs a CMV compensation value during the second cycle;
• and
• a processing element that receives the CMV error value, the amplified difference signal, the CMV compensation value, and a differential amplifier gain value, and generates a CMV compensated output based on the CMV error value, the amplified difference signal, the CMV compensation value, and the differential amplifier gain value.