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Creating Part for Allegro SI

wERerABbiT

 Hi All,

 I'm trying to create a 2 pin part that consist of 

a) A series resistor and inductor

b) 2 capacitors connected to ground 

                   |---Rs---|

pin1-------------|          |------------pin2

          |        |---Ls---|        |

          |                           |

         C1                        C2

          |                            |

      GND                        GND

 

The part should only consist of 2 pins. (even in the schematics it should be a 2 pin part and does not show the discrete components)

However when the topology is extracted to SigXplorer, it should expand to all the parts shown.

 

May I know how do I create such a part? 

Also since pin1 and pin2 is connected through a resistor, the nets connected to the pins should be an Xnet.

 

Thanks All

 

** I tried "Attach Implementation" --> Schematic View   and attached a schematics with the discrete parts and 2 ports but that doesnt work **

  • DavidP

    Hi,

    Normaly for this you create an Espice model, i will make it like this:

    ("myRC_model"
    ("ESpice"
    ".subckt my_comp 1 2
    R1 1 2 1Meg
    C1 1 0 1.5pF
    L1 1 2 1

    C2 2 0 1.5pF
    .ends my_comp")
    ("PinConnections"
    ("1" "0")
    ("2" "0")
    )
    )

  • wERerABbiT

    Thanks David

    The Espice model works.

    However, with

    ("PinConnections"
      ("1" "0")
      ("2" "0")
    )

    I cant obtain the whole Xnet when net is extracted to SigXplorer

    When I change it to 

    ("PinConnections"
      ("1" "2")
      ("2" "1")
    ) 

    and extract net... I get the whole Xnet topology

     

    a) Is it wrong to use the pin connections as "1" "2" & "2" "1" ?

    b) How do I ensure that node 0 is connected to GND ( with a 2 pin part) and will simulate correctly ?

     

     

     

     

     

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