I have a problem on the use of REF5025 and it`s application.
One thing I want to be clear is the output noise that looks like triangle wave from the application TI brahs recommanded.
I designed my REF5025 setting like that :
I mimic the application on the page 12 from its spec. with OPA735.
When I check TP13 - AVSS_2.5V, I watch the triangle pulse on -2.5V baseline like that:
I don`t understand this situation, and I can`t use the output as reference.
Could you point out what is problem and why it ocurred?
Additionally, I wish to know that the application above is compatible as Analog Voltage Input on ADS1298 or not.