Simultaneously Sampled Data Acquisition Device

A circuit, comprising:

• first selection circuitry configured to output one of a positive analog input signal, a negative analog input signal, or a positive calibration signal;
• second selection circuitry configured to output one of the negative analog input signal or a ground reference signal;
• and
• an instrumentation amplifier configured to output an analog signal corresponding to a voltage difference between a first signal output from the first selection circuitry and a second signal output from the second selection circuitry.

A data acquisition device, comprising:

• a plurality of signal selection circuits;
• and
• a plurality of amplification circuits;
• wherein each signal selection circuit has a corresponding amplification circuit;
• wherein each signal selection circuit of the plurality of signal selection circuits is configured to output, to the corresponding amplification circuit, a first analog signal comprising one of a positive analog input signal or a positive calibration signal and a second analog signal comprising one of a negative analog input signal, the positive calibration signal, or a ground reference signal;
• and
• wherein each amplification circuit of the plurality of amplification circuits is configured to output a third analog signal corresponding to a voltage difference between the first analog signal and the second analog signal and a fourth analog signal corresponding to a voltage difference between the second analog signal and the ground reference signal.