Successive-Approximation-Register Analog-to-Digital Converter (SAR ADC) has the characteristics of low power consumption and small area.In this paper
for the 12-bit SAR-ADC
the output voltage errors of the built-in C-R DAC are analyzed
and the corresponding calibration algorithm is proposed to improve the precision of the SARADC.Based on the circuit structure of 12-bit SAR-ADC and the calibration algorithm
the MATLAB/Simulink system-level model is established.The simulation results show that
the static and dynamic properties of SAR-ADC are significantly improved