Please advise on the power supply of each part!

zhengzhoutie

Please advise on the power supply of each part! [Copy link]

Now I have a single-chip computer (5V power supply), a small signal acquisition (small signal millivolt level, involving op amp +-5V power supply), and a motor driver (voltage 12V power supply). How to power these parts? After testing, it was found that when the three parts are put together, the interference of small signal acquisition is very large, and the small signal will be submerged. I rarely deal with small signals before, and now it is very difficult. I hope experienced scholars can give me some suggestions. Thank you! I also want to know what solutions you usually use to power your system. I hope to give a reasonable and well-founded answer to those who encounter the same problem in the future. [ This post was last edited by zhengzhoutie on 2010-4-12 20:41 ]

murray

Hey, the switch power supply is powered separately, click

zhengzhoutie

Does your microcontroller system share the same power supply as the signal processing system?

john_wang

Also confused...