Please help me to solve this problem.
I use OP7200 to input analog signal, but the voltage is not correct.
Will be more 0.060v when plug wire in, although no signal.
So, I try to use "adrd_se_ch.c" to check voltage for analog Pin that no wire plug in.
All have value from 0.020v to 0.025v... I think it must be Zero, since no signal in.
Please help & give me an advice.