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LSF0102: IBIS Model Questions

PY (Pengyu) Song
Expert 5860 points

Part Number: LSF0102
Other Parts Discussed in Thread: LSF0101

Hi team,

Regarding IBIS model of LSF0102 - 

1. Using CST simulator, only pin 8 can be selected - any idea what is the cause? 

2. There isn’t any ramp curves for driving the system - is this correct? 

  • +1
    Guru 326900 points

    The LSF is a passive switch; it does not have any buffered I/Os that could be modelled with IBIS. (Only the EN pin can be seen as a CMOS input, but that is not how it is used normally.)

    The A/B/Vref pins are connected directly to the sources/drains of the internal pass transistors, and translation works by using the analog behaviour of those. See [FAQ] How do the LSF translators work?

    If you want to simulate the LSF, use the Spice model of the LSF0101.