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Invisible power pins on opamp fail to connect to global net

John Davies
I have a library of opamps that I use for teaching, which includes capture symbols and pspice models. All worked well with release 16.2 but two problems have arisen in 16.3. The first is that I hide the power pins using the "Pin Visible" check box in the Pin Properties dialog box. Power is provided through power symbols called V+ and V- somewhere in the circuit, which create global nets. This no longer works in 16.3. Now I have to make the pin visible using the same dialog box. It is not necessary to draw a wire to the pin, just to make it visible; it then connects to the global net. I am not sure whether this is part of the enhanced power pins features in release 16.3 or whether it is a bug.
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  • paragc

    Checked on 16.3 ISR S025 - you can assign the invisible pins connections to a global net. These get exported by the global name  - the best place to check this is in pin section in property editor.

     PSpice netlister will require these nets to be connected to a global net. You can connect a global symbol V+ with lets say +12V global symbol up in hierarchy or another page. Basically - The connection assignment for V+ must exist which assigns V+ name with another global flatnet name.

     

Reply
  • paragc

    Checked on 16.3 ISR S025 - you can assign the invisible pins connections to a global net. These get exported by the global name  - the best place to check this is in pin section in property editor.

     PSpice netlister will require these nets to be connected to a global net. You can connect a global symbol V+ with lets say +12V global symbol up in hierarchy or another page. Basically - The connection assignment for V+ must exist which assigns V+ name with another global flatnet name.

     

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