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Forum Post: ADS8689: How would it work if AIN_P=0V with Eo=-2mV?

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Part Number: ADS8689 Tool/software: Hello, My customer is investigating ADS8689. They understand AIN_P can work down to 0V(min), but it has -2mV(min) offset error even at Ta=25degC on all unipolar ranges, so they think ADS8689 may recognize as -2mV input. In this case, how would ADS8689 work? Will it recognize as 0V if the input voltage is even below 0V and the output of the ADS8689 will be 0x0000? Best Regards, Yoshikazu Kawasaki

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