errors on erc - more than one pin on net, OUTPUT and SUPPLY pins mixed on net, SUPPLY pin VDD overwritten with more than one signal

[kliJSK36]

I have the following errors on the ERC:

"More than one OUTPUT pin on net 0"

"OUTPUT and SUPPLY pins mixed on net 0 (out)"

"OUTPUT and SUPPLY pins mixed on net 0 (sup)"

"SUPPLY pin VDD overwritten with more than one signal"

I've tried to check for a solutions but couldn't find anything helpful to solve those problems.

I hope that I would find a solution here 🙂 

[jorge_garcia]

Hi @kliJSK36,

I hope you're doing well. Multiple outputs being tied together is generally a big problem. Imagine connecting the outputs of two opamps together, what will tend to happen is that they will fight each other until one basically blows (For example if one op amp has an output signal near ground and the other has an output signal near vcc a large current will flow from one to the other and the specs will be exceeded causing damage to one or both op amps). 

Double click on the errors to see where you have multiple outputs connecting  and correct it. The last error you are seeing is likely a consequence of the first issue.

Output and supply being mixed is often not a problem since the output of a voltage regulator will often be connecte to a supply pin. In those cases it's better to have the output of a voltage regulator be a pwr pin.

Let me know if there's anything else I can do for you.

Best Regards,