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PGA900: LTPSICE simulation help

Austin Freund
Prodigy 10 points
Part Number: PGA900

In the LTSPICE model there are only 8 pins listed out of the 36 on the data sheet. I know that about half of the pins are NC so i expected less than the data sheet but it still seems like its missing a few important pins. I am unsure how the listed pins correspond to the ones on the data sheet as they aren't all named the same. I was expecting some of the bridge sensor inputs as well. Any help with corresponding the pins or if i did something wrong on import, would be extremely helpful. 

 

  • 0
    TI__Mastermind 31655 points

    Hi Austin,

    Since there is no way to simulate the digital portion of the device, the only block that is provided is the DAC output stage, so what you posted is in fact the full model. It does not appear that you have done anything wrong on the import. 

    Note that the DAC itself is also not represented in this model. This only simulates the DAC gain stage that can be seen in the typical applications section of the datasheet. VDAC is output of the DAC and the input to the DAC gain stage, and VDDp is the positive supply rail for the gain stage (this is directly supplied from the VDD input to the PGA900).


    Regards,

    Scott