A Configurable Multichannel DAC Module Design Method Based on FPGA and DSP

In signal processing applications, AD conversion and DA conversion are very important. This paper focuses on DA conversion interface design based on FPGA and DSP, the output channel, type, and value of the module can be configured as needed. Furthermore, this article discusses a method to improve the consistency of the DA conversion module, which is using a digital multimeter and a standard multichannel ADC device to adjust the deviations of noise level, output amplitude, frequency and phase among the outputs of the channels. Finally, a configurable multichannel DA conversion module is designed, it can be used in analog output of signal processing.