LTC6409 Vocm not functioning as expected

Hi EGoldste ,

Good day. I've checked the LTC6409 circuit the functionality of Vocm pin and it seems working fine on the circuit. Please check below simulation: LTC6409.asc

Can you checked the version of LTSpice if its on the newest version? Also, can you send your asc file for checking? Thank you.

Regards,
Gilbeys

ADC_Input_Conditioning.asc

I ran your simulation file at it appears to be working as expected. Unfortunately, mine is not. Here it is. Please let me know what you think!

Hi EGoldste ,

Good day. The problem seems to be the supply of +/- 2.5 V in your circuit. I tried changing the supply to a 5V single supply, and the circuit works fine. 

Regards,
Gilbeys

Hi Gilbeys,

The LTC6409 is specced to operate at +/-2.5V, so what's happening here?

Thanks,