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ADE7880 Oscilator does not run

Question asked by Ondrej on Jun 7, 2015
Latest reply on Jun 10, 2015 by Ondrej

Hello,

I designed simple board for ADE7880 (the schema is attached). When I connect 5 volts the power supply to the board, the Icc is 3.8mA. The datasheet says it should be around 28mA. I also tried to measure at pin 28 whether the oscilator runs, but I do not see anything there.

I have two ideas what could be wrong:

-The Exposed pad is not connected anywhere, as it was the instruction in first version of datasheet.

-the resistor and capacitor connected to the reset pin do not hold this pin low for long enough.

 

What do you think?

 

Best regards,

Ondrej

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