Mad Professor
Senior Member
Good day all.
As per the title I am looking for help chossing the right op-amp for a shunt resistor.
I have never used op-amps before, so op-amps are very new to me, and I don't know alot about them.
I am looking to monitor & log the current on my microcontroller.
The current load is 0-5amps, and the current shunt resistor is a 0.010ohm 1% 3w resistor.
From what I have read it looks like I need a non-inverting low-offset rail-to-rail op amp.
I had a look on RS's web site, and there are loads to choose from, and I am way in over my head.
I see that some op-amps need more then one power rail, one above ground, and one below ground.
I need an op-amp that will be able to work on 5dcv or 12vdc.
Can someone please advice.
Thanks for your time.
Best Regards.
As per the title I am looking for help chossing the right op-amp for a shunt resistor.
I have never used op-amps before, so op-amps are very new to me, and I don't know alot about them.
I am looking to monitor & log the current on my microcontroller.
The current load is 0-5amps, and the current shunt resistor is a 0.010ohm 1% 3w resistor.
From what I have read it looks like I need a non-inverting low-offset rail-to-rail op amp.
I had a look on RS's web site, and there are loads to choose from, and I am way in over my head.
I see that some op-amps need more then one power rail, one above ground, and one below ground.
I need an op-amp that will be able to work on 5dcv or 12vdc.
Can someone please advice.
Thanks for your time.
Best Regards.