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AD7492 artifacts

Question asked by Lukasw123 on Feb 2, 2017
Latest reply on Feb 6, 2017 by jcolao



I am using the AD7492 ADC to convert an analog signal at about 0.1 MSPS but at irregular intervals I am getting single samples which are way off. The samples always contain many 1-bits near each other e.g. 0x3FF0 or oxE000. I have outputted the result to my computer downsampled to 5 kHz which is what is in the figure below.Single-sample artifacts

The schematic is attached. I have also tried adding a 10 uF capacitor to the REF OUT analog reference voltage to no avail. I am new in this area so please bear with me if I have made some silly mistake.