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Does the pad on the AD7143 CDAC chip have to be grounded?

Question asked by gbmhunter on Dec 21, 2011
Latest reply on Jan 15, 2012 by gbmhunter

Hi,

 

Does the pad on the underside of the AD7143 (QFN-like package) have to be grounded for the IC to work?

 

I have connected everything up except this pad, and the chip won't respond over I2C (no acknowledge bit).

 

Cheers, Geo

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