THS4561: Output oscillation with zero input

Hello Hac,

  Would you be able to provide us with the Tina-Ti file?

Thank you,

Sima 

Hi,

Please check attached TSC file.Current_Sensing_FullyDiff.TSC

Here is the schematic for PCB implementation:

Please note that the REF2030QDDCRQ1 reference IC supplies 3 identical THS4561 circuits like the one in the above schematic.

Here is the PCB layout of the amplifier:

Pin 2 and 8 are shorted to VDD and VOCM respectively. In THS4561 RUN package, pin 2 and 8 are NC pins:

Hello Hac,

   Apologize for the delay here and thank you for the additional information. I should be able to look into this in more depth by end of the week, but in the meantime I would remove both 1nF capacitors (C43 and C44) as a test.

Thank you,
Sima