ADR361B

Dear Sir
I am using ADR361B to give a reference of 2.5 Volt to Non-Inverting pin of Opm Amp (MAX4238AUT).
I am seeing 2.6V on Non-Inverting Pin and 2.7V on Inverting Pin.

I want to have 2.5V reference in all operations.

How to resolve this issue?

Regards
Murthy