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ad5308, some elements incorrect value

Category: Hardware
Product Number: AD5308

Anyone had much experience of these chips?

I am having issues with some of the dac elements not producing the correct outputs. I note there is another question on this forum of similar nature back in 2013.

Sometimes all outputs are correct, sometimes one or two are wrong, exactly the same routine in the code driving them and same data.

I've checked and double checked the data, clock and sync waveforms and all are ok.

Experimented with the LDAC pin and the LDAC registers. Held pin low and pulsed low at the end of the data, same result all the time.

Tried DAC reset, power down circuit and dump decoupling caps to ground too.