With the rapid development of communication technology and digital signal processing technology,higher requirements are put forward for digital to analog converters(DAC),especially in terms of conversion speed and accuracy.Therefore,a high-precision digital DAC system was designed.The system includes DAC module,power circuit,and analog filtering module.Among them,the DAC circuit design is a 16 bit high-performance analog-to-digital converter based on the R2R resistor network architecture,designed using discrete components.The input end adopts the I2S communication interface,which converts the input serial data into parallel data,and then transmits it to the resistance network for digital to analog conversion through DAC.By filtering the output analog signal through a designed analog filter,the entire system can meet the requirements of high precision and resolution.Finally,the system was tested and validated using FPGA,and it was found that the data conversion results achieved the expected goals.
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