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AD9102 - Differential To Single Ended Voltage

Question asked by JCole on Apr 20, 2015
Latest reply on Apr 22, 2015 by JCole

We are attempting to use the following circuit to produce a single ended voltage ramp on the output:

AD9102.png

The circuit is based on the circuit used in the AD9102 eval board, except that there is no negative supply (-Vs is tied to ground instead).  

 

The AD9102 is generating a 1ms ramp that looks fine when probed directly at the outputs of the AD9102, but then appears distorted at the output of the ADA4817.  It seems as though the AD4817 is integrating the signal.  This distortion/integration occurs with or without the feedback capacitor C17 installed. 

 

Any suggestions on what might be happening?

 

Thanks

 

JCole

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