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ADA4937 Load

Question asked by YYHH on Oct 26, 2011
Latest reply on Oct 27, 2011 by YYHH

Hi,

 

I'm simulating the ADA4937 Differential Ampliifier that I will use as ADC driver for the AD9255, with and without output filter.

 

ADA4937_sim.png

ADA4937_1.png

 

ADA4937_2.png

 

 

It seems that adding the output filter at tha ADA4937 leads to a huge distortion of the output signal.

 

ADA4937_3.png

 

ADA4937_4.png

 

WHY?

Does the ADA4937 requires some specific limited load?

 

Would there be some problem in spice models?

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