Post Go back to editing

ADA4817 self-oscillation

Hi,

I use ada4817-1 and adg1414bcpz to convert current to voltage.

But the amplifier self-oscillate at frequency about 80MHz.

How can i cancel the unexpected frequency?

In attchment, ADA4817-1 convert current in DUT to voltage. ADG1414BCPZ used to

select feedback resistor to make gain variable.

ProtelSchematic.pdf
Parents
  • Hi, krisf

    "Are you seeing the oscillation at all feedback configurations?"

    Yes, i do.

    "What load is the ADA4817 driving? Am I interpreting your circuit correctly that you are also using the ADG1414 to connect the output of the amplifier to your load?"

    The output of ADA4817 is connected to +IN of AD8065.

Reply
  • Hi, krisf

    "Are you seeing the oscillation at all feedback configurations?"

    Yes, i do.

    "What load is the ADA4817 driving? Am I interpreting your circuit correctly that you are also using the ADG1414 to connect the output of the amplifier to your load?"

    The output of ADA4817 is connected to +IN of AD8065.

Children
No Data