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DAC8811: About the output fluctuation.

Guru 10485 points
Part Number: DAC8811

Hi team,

Even if the input signal is set to 0, the output will fluctuate as below waveform.
The output is acquired by converting the current into a voltage with AMP.
Could you pls tell me why it fluctuates.

*Yellow :Output voltage
 Green ; REFpin



Sincerely.
Kengo.