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Output sawtooth wave to AD9144

Question asked by Mochi on May 14, 2018
Latest reply on Jul 20, 2018 by Mochi

This is a question about the operation of the AD9144.
My customers are evaluating the AD9144.
My customer is trying to output sawtooth waves from AD9144.
T = 200 nS, + 100 count → -100 count
The customer inputs the code and evaluates the output waveform.
Strangely, the output slope bounces small around 0 count.
Customers suspect this as miscounts.
Is this due to the nature of T-DAC?
Do you have any views?
Please advise me.

 

Is this phenomenon called MIDSCALE GLITCH?
Where should I check to isolate it from mistakes in circuit design?

Best regards

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