Design and Implementation of High Precision DACs Calibration Algorithms Based on FPGA

Abstract

High-precision DACs are widely used in various fields, and the error of DAC chips has always been a key factor affecting digital-to-analog conversion. DACs calibration algorithms have become an important research hotspot. In this paper, we design a high-precision DACs calibration system based on FPGA, analyze the calibration principle and error of high-precision DAC chips, and propose three kinds of DACs calibration algorithms and verify the analyses. The optimized algorithm can effectively eliminate the system's offset error, gain error, process defect error, etc. The system's comprehensive performance and output accuracy are improved, and the precise control of digital-to-analog conversion is realized.