Trying to apply everything that I learned from the tutorials to a real chip… but my limited knowledge of eletronics is causing me some problems.
The chip on which I’m working on has these characteristics (from the datasheet):
- Working voltage: 2.7-5.5v
- Max power consumption: 20mA
I would like to undestand better which kind of shunt resistor I have to use to get the best result in power analysis. I’m using chipwhisperer lite and I will provide to the chip the 3.3v from there.
A- There is a value better to get a better power analysis? An high value of the shunt resistor is better?
B- If I undestood correctly the shunt resistor all will be fine if below to 10ohm, or I misunderstand something? A 0.22ohm resistor will be fine?
C- based on the information present on Notduino target I saw that a normal 51ohm resistor has been used as shunt resistor. So it’s the same thing?
D- there is a simple way to calculate the value of the shunt resistor needed?
Thank you in advance