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Analog Lib Switch

IEEE over 2 years ago

I have a simple VIN voltage divider of two resistors, Rtop and Rbottom.

VIN is rise from 0 to 5V.

I want the output don’t pass 1V, mean when VIN>2V VOUT=1V. when VIN<2V, VOUT=0.5*VIN

How to use analog lib ideal switch?

What to connect to all four terminal(N+,NC+,N-,NC-) ? What closed\open voltage to use? What R open Rclose to use?

ShawnLogan over 2 years ago

Dear IEEE,

IEEE said:
How to use analog lib ideal switch?

I am not sure if you viewed the Forum post at URL:

https://community.cadence.com/cadence_technology_forums/f/custom-ic-design/41952/using-the-switch-in-the-analoglib

It has an example of its use that I think will provide some helpful information.

Shawn
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Andrew Beckett over 2 years ago in reply to ShawnLogan

Also look at (from the command line) "spectre -h relay" (the analogLib switch component is the spectre "relay" component). You seem to have connected it up in a rather strange way. The voltage on the controlling input controls whether the switch is open or closed, and then you can choose the resistance when open or closed.

Andrew
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