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AD8021 distortion

Question asked by ldc on Feb 12, 2014
Latest reply on Feb 27, 2014 by ldc

Hi,

 

When I drive my AD8021 with signal higher than ~300mV my output signal (sine) starts to distort. Without the compensation capacitor I can input larger values before the distortion starts, but when it then starts it seems more severe. I have work with these chips before, but this is the first time I see this type of behavior.

setup; AD8021 gain set to 6.2 with Rf = 1k, PSU supplies at +/-12V with lots of decoupling capacitors.

 

Does anyone have an idea what the cause of this could be or have seen something similar?

 

Regards

ldc

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