This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

F28335 ADC noise measurement

Other Parts Discussed in Thread: TMDSCNCD28335

Hello everybody!

I'm using the TMDSCNCD28335 board. This board is interfaced with our sensors (current, voltage, ...) throught an "interface board".

This interface board is made of several op. amplifiers with resistors to adapt the sensors signals to the 0/3V required by the F28335 ADCs. The op. amplifiers are supplied +/-5V by a TRACO DC/DC converter (reference is TEN 5-2421WI).

Now my problem is that ADC acquisitions are quite noisy when my board is supplied throught this Traco converter. When I use a laboratory supply, the ADC acquisitions are really better.

Has anybody ever experienced this kind of problem ?

How can I handle that problem, maybe by adding capacitor/inductor on the Traco output ?

Thanks for your help,

Best regards,