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S32K SAR ADC Input Circuit

Question asked by christhomas on Jun 12, 2019
Latest reply on Jun 14, 2019 by Jorge Antonio Alcala Vazquez



Is the input RC circuit (RF and CF) necessary when interfacing to the analog inputs within the S32K processor. If instead the analog input is passed through a buffer and then straight to the MCU Analog pin, would that be ok as well or would that deteriote the performance/accuracy?


Also, if there is no capacitor between VREFH and VREFL, would that cause accuracy problems?


SAR ADC Input Circuit