Good evening,
In design we used a Library on the software Proteus of your component. And it happens to have the Vcc in Pin 4 instead of Pin 8, and the ground in the other way around as you can see in Figure below. The datasheet says Vcc to be Pin 8 and negative gain to be Pin 4.
We already build the PCBs and they are too many to make a simple fixing. We will have to make a mini PCB working as a shield connected above ours to invert those poles.
I wrote to your team to ask if the LM358 with the inverted poles does exists as the library suggest?
The circuit function is to remove the negative current of a AC non invasive current sensor as it amplifies its signal. It removes the negative current because the signal is going to be read by an Arduino Nano 33 IoT, and it could break it if it is not into a range of 0V to 3,33V. In design, we were supposed to set the lower limit with the negative gain as ground or V=0.
In that case, if the negative gain is Vcc=5V, and positive gain is ground V=0, in other words, if both gains are inverted and we use it as it is right now, What would happen? Our team says it could break the Arduino.
Would you suggest another solution to our problem?
We are running out of time with our customer.
Thank you for any help or advise you can bring to us.
Best regards,
Estiven Taborda.
