cupoftea
Advanced Member level 5
Hi,
If you have a micro on a PCB, and one of its inputs comes from a cable from a different PCB, then how do you combat potential ESD problems to the micro input pin?
As you know, you can do
1...Series resistor into micro pin, and (small) filter cap on micro pin.
2...ESD diodes from the micro input to Vdd and Vss of micro.
3.....TVS on the micro input.
But which of these is the best, and when would you use all of these?
If you have a micro on a PCB, and one of its inputs comes from a cable from a different PCB, then how do you combat potential ESD problems to the micro input pin?
As you know, you can do
1...Series resistor into micro pin, and (small) filter cap on micro pin.
2...ESD diodes from the micro input to Vdd and Vss of micro.
3.....TVS on the micro input.
But which of these is the best, and when would you use all of these?