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
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.
Apologies for the delayed response. I'm moving this thread to the Switches and Multiplexers Community which caters your application.
I'm looking into this now. In the meantime, may I know what simulator are you using? Also, can you share your circuit file so I can better have a look at it?
Thank you for response.
We are using LTspice. We wrapped up subcircuits of ADG721 series by LTspice
Meanwhile, we droped ADG721due to unclear behavior and our new requirement
of quad inputs.
Now we are using ADG442B... It works well.
I am not allowed to share the files.
Besides circuit files, we can point out the following:
From the datasheet and the cir files, it is obvious that ADG721 and ADG722
should be exchanged.
On Wed, Jun 20, 2018 at 9:56 AM, mayp <
Thank you for confirmation.
If I may ask one more thing, please consider providing those spice models
(many other ADG series) in the common library of LTspice, which is of your
On Wed, Jun 20, 2018 at 11:00 AM, mayp <
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.
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