TMS320C2000 series DSP,which fitted control using well,has integrated AD converter.A compensating method is proposed to enhance the converting precision,by adding reference signal and programming algorithm,calibrate the existing gain error and excursion error.The material calibrating method is given,and the method is validated on F2812 DSP chip.The experiment result indicates that the method taking effect to compensate the error,enhancing the converting precision at a large extent.
