AD7401 Bitstream

Hello Together,

we use the AD7401A for current measurement of our power inverter. The converters are supplied with a bootstrap circuit with the reference on the phase they are measured.An FPGA does the SIN3 Filter.

Everything works fine!

But now we found that we have a problem at startup. Sometimes the data output comming from the converter stuckes at high level.

So I´ve some questions about the clock-input: - Is it allowed to let it always activ, even when the converter is not supplied on the HV-side?

- Is there a minimum time we have to wait after power up the device on the HV-side, until the data-output is valid?

Thank´s in advance for help.

Regards

Michael

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