The misbehavior of the spice model of ADG721.cir

I am working on the spice model of ADG721.cir.  The mux control input works as if it is low-active sw. But this is against what the datasheet says: logic 0 means sw off. Please confirm that spice model is corrent or not.

Many thanks. jo

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  • Hi Jo,

    I'm glad that you have found the ADG442 to better cater your quad input aplication.

    To verify your observations, I did try to check the model and had a quick simulation. I can confirm you are correct and thank you for bringing this to our attention. I will update both ADG721 and ADG722 spice models for correction.

    Let me know if there are other concerns.

    Best Regards,


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