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Switches/Multiplexers

Q&A Analog Multiplexer design in LTspice

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Analog Multiplexer design in LTspice

pstpvn3@gmail.com on Feb 5, 2020

I've been trying to use Analog multiplexer ADG408 in LTspice. But I'm have some doubts regading it....

> How to give inputs for the selection lines in LTspice,

> For me the output is not changing, when i'm changing it.

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mayp
Feb 6, 2020 in reply to pstpvn3@gmail.com +2 verified
Hi pstpvn,

Can you share a screenshot of your simulation results?

From the ADG408 datasheet Truth Table on page 7, with A0 - 0, A1 - 0, and A2 - 1 then it is S5 that should turn on (not S2). See screenshot…

0 mayp

on Feb 5, 2020 6:44 AM
Hi pstpvn3,

Can you share the scope shot of what you are trying to simulate?

What are you expecting in your simulation?

Regards,

May
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+1 pstpvn3@gmail.com on Feb 5, 2020 8:59 AM in reply to mayp

Hi may,

Thanks for ur response.

I want the mux to switch any one input signal from the 8 combination given to it at the pins(S1 to S8),

Based on the selection lines.

If I give A0-0 A1-0 A2-1 (001) means in the output i should get S2 and so on.
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+1 mayp

on Feb 6, 2020 12:56 AM in reply to pstpvn3@gmail.com
Hi pstpvn,

Can you share a screenshot of your simulation results?

From the ADG408 datasheet Truth Table on page 7, with A0 - 0, A1 - 0, and A2 - 1 then it is S5 that should turn on (not S2). See screenshot of the Table below.

Regards,

May
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