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CN0359 evaluation board error

Question asked by Jlp56 on May 24, 2018
Latest reply on May 25, 2018 by R.L



We recently purchase the evaluation board but there appears to be a problem. Even with just a fixed resistor connected between pin pairs 1/2 and 3/4 (i.e. pins 1 and 2 shorted and pins 3 and 4 shorted) the reading appears erratic, jumping between values by over 50%. Connecting an oscilloscope between the pin pairs, it appears the signal is not clean, with a large envelope around small windows of the correct waveform (see picture). Have we just received a damaged board or is there something else we can try to remedy this?