The misbehavior of the spice model of ADG721.cir

Question

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

ADIApproved · Accepted Answer

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, 
 May)

ADIApproved · Answer

Hi Jo, 
 Yes, we are currently doing this and will be implementing soon. Please expect to see these models in LTSpice library available in the next few weeks or months. 
 Best Regards, 
 May

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The misbehavior of the spice model of ADG721.cir