Question
Embedded PGA sensing error due to no differential input for shunt resistor
Hi, I am currently developing a motor control application with more than 50A. My current solution is using LM358 with differential input to elimate the low side shunt voltage due to high current.
Now, I would like to reduce the PCB size and component cost. I would like to use the embedded PGA in stm32f303vc. However, I am worrying if there is no differential input for the shunt resistor, there will be sensing error. Should I keep using my current solution or it is okay to use embedded PGA? Thank You.
