davyzhu
Advanced Member level 1
Hello all,
I use a 1.8v core power supply to the main CPU, and the CPU has internal analog PLL need 1.8v analog power supply. I found the reference use two paralleled 10 Ohm resisters to form a 5 Ohm resister between the two power supply. But why to use the small resister?
I found the traditional usage is to connect the two supply with a wire (or 0Ohm resister) and a Ferrit Bead, which one is better?
Regards,
Davy Zhu
I use a 1.8v core power supply to the main CPU, and the CPU has internal analog PLL need 1.8v analog power supply. I found the reference use two paralleled 10 Ohm resisters to form a 5 Ohm resister between the two power supply. But why to use the small resister?
I found the traditional usage is to connect the two supply with a wire (or 0Ohm resister) and a Ferrit Bead, which one is better?
Regards,
Davy Zhu