AnsweredAssumed Answered

AD420 Unstable output voltage signal

Question asked by Nevox on Aug 8, 2017
Latest reply on Aug 11, 2017 by rrosario

Hello! I have a problem with ad420 voltage output. I need VOUT=0-10V. 

In my scheme i have 4 independent AD420.
From 0 to 3 volts on the AD420 (6 volts after the amplifier) everything works stably. Increasing the voltage, the output signal starts to somehow jitter (as shown on the oscillogram). I use VLL for power ADUM1401.

Why is this happening?

PS In the current version of this scheme, everything works stably and without problems.

 

 

 

 

 

P.S.1 I have a video - DAC AD420 problem - YouTube 

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