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Problems with AD8065

Question asked by NT789 on Jan 11, 2013
Latest reply on Jan 16, 2013 by OliverSedlacek

Hello all!

 

I recently received a few AD 8065 and 8066 chips that I had ordered. To simply test them, I soldered them and wired up a simple buffer on a breadboard. The output showed a lot of oscillations of around 300 MHz. The same thing happened when I wired up an op-amp negative feedback circuit of gain 2.

 

The output read for wither circuit is highly arbitrary (at least, it seems so to me), and I haven't been able to reproduce my results. But the oscillations persist.

 

Why is this happening? What can I do? Are my chips faulty, or am I using them wrong?

 

Please do help! Thanks in advance!

 

Message was edited by: Varsha S The input I fed to the circuit was a 1 V, 300 Hz sinusoidal wave form.

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