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I'm doing a simple project which will do voltage calculations(A+D)-(B+C)/(A+B+C+D).
I'm using INA105 for the addition part. With Vcc +5 (+10) and Vdd -5 (-10), i obtained very poor results. For example, A=-5, B=-5, A+B=-10. This is problematic because the precision of the INA105 itself is not 100%. In this way, some noise may occur.
I'll add a VR in the feedback loop to fine-tune, I guess. But I may be wrong. Any suggestions to help ease the design process would be much appreciated.
Cheers mates!
I'm using INA105 for the addition part. With Vcc +5 (+10) and Vdd -5 (-10), i obtained very poor results. For example, A=-5, B=-5, A+B=-10. This is problematic because the precision of the INA105 itself is not 100%. In this way, some noise may occur.
I'll add a VR in the feedback loop to fine-tune, I guess. But I may be wrong. Any suggestions to help ease the design process would be much appreciated.
Cheers mates!