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ADE7878 AVDD,DVDD & REF IN/OUT VCC 

Question asked by panneerrajan on May 15, 2017
Latest reply on May 17, 2017 by panneerrajan

Hi,

 

We have developed new PCB with help of reference circuit for using ADE7878 & 7880. we assembled ADE7878 chip and required supporting components and check three channel voltage & current waveform in oscilloscope, its showing expected.

After power on the PCB,  VDD pin(26) showing 3.3V in multi meter, But no voltage showing in AVDD, DVDD & REF IN/OUT pin. (Actally its expected 2.5v & 1.2V)

Also not able communicate with our CPU through SPI coomunication. we are using 16.384MHz crystal and internal ref.

could you please suggest to resolve the issue.

 

Thanks,
Rajan

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