Hi I have an input signal which is about 0,21v at max. I want to use the arduino to read it, right now I have it set to internal reference so it can but not accurate. My tough was to use a opAmp so i bought a LM1458N. The problem is using it. I guess i want non inverting, but how can i limit it to…

simple OpAmp question

CrossRoads August 23, 2012, 2:35pm 2

If the LM1458N is only powered from Gnd & 5V, that's the max range the output will have.

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