hemnath
Advanced Member level 3
I want to measure 0 to 30 mA with a resolution of 1uA stability and display it on LCD. Can you please help me to design the circuit.
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I want to measure 0 to 30 mA with a resolution of 1uA stability ...
--> 250nA is OK if you want 1uA precision.M358 can have input bias current as high as 250 na
I have done this with TLC2272, it worked just fine. But you should take care of the offset voltage.How about LMC662?
You need to do this for each board seperately because the offset output may vary. If you don't do this, you will need a negative rail for calibration as well, or for not cost sensitive application you could use a more embedded solution like max4080 for high side measurement.
I want to measure 0 to 30 mA with a resolution of 1uA stability and display it on LCD.