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ADS1258EVM "mysterious" parts found on board

Other Parts Discussed in Thread: ADCPRO

Hi all

If someone of you used ADS1258EVM, probably you noticed a second I2C chip, U13, but there is no info about it and it isn't on board schematics. By numbers written on it I couldn't determine the exact model (why the hell do manufacturers write some bull*** instead of actual part num?) I just want to know what does it stand for...

This is what it got written on it:

4 AD

1023

HR5

and it got a Microchip-s symbol on it.

googling and searching on microchip's site gave no results.