High-linearity testing stimulus signal generator

A high-linearity testing stimulus signal generator comprising

• a signal collection unit receiving an input current signal;
• a waveform conversion unit connecting with the signal collection unit, converting the signal output by the signal collection unit into a triangular wave voltage signal, and outputting the triangular wave voltage signal via a voltage output terminal;
• a first voltage-to-current conversion unit connecting with the voltage output terminal of the waveform conversion unit and converting the triangular wave voltage signal into a first current signal;
• a delay unit connecting with the voltage output terminal of the waveform conversion unit and delaying propagation time of the triangular wave voltage signal;
• a second voltage-to-current conversion unit connecting with the delay unit and converting the delayed triangular wave voltage signal into a second current signal;
• a current comparison unit connecting respectively with the first voltage-to-current conversion unit and the second voltage-to-current conversion unit to receive the first current signal and the second current signal and then perform comparison thereof to output a current difference signal;
• an error calculation unit connecting with an output terminal of the current comparison unit to receive the current difference signal and perform error calculation to output an error signal;
• and
• a compensation unit connecting with the error calculation unit to receive the error signal and perform signal compensation to output a compensation signal to the signal collection unit.