I am currently working with HT9032D with arduino. I am not getting any reading from the Dout pin. Even i tried change the resistor value from 200kohm to 400kohm, still not getting any reading when the telephone rings. I am using a normal phone here where the voltage is 48.1 V when idle. Circuit connection is exactly the same as in the datasheet. Am I making a mistake in choosing the right components.
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