AnsweredAssumed Answered

Newbie to ADS transitioning from LTSpice

Question asked by ren_zokuken01 on Feb 16, 2016
Latest reply on Feb 20, 2016 by alexi
So I just got started on ADS and previously using LTSpice. I'm just doing some test run just to make sure I know how to use the software and I set it up just right. For now, I'm only concerned with Transient analysis, so need to concern myself with Harmonic Balance or S-parameters analysis and all the other ones.

I seem to be having trouble getting NMOS components to work. If you would take a look at the attached screenshot, I have a simple NMOS Common Drain configuration from an input of common-mode sine-wave VIN. As you can see, the M1 is acting like a constant resistor close to the value of R, making the amplifier just a voltage divider.

Why is this? Do I have the wrong M1 component or maybe I need to fill in more it's parameters?
I got this component from:

Analog_Parts/AP NMOS Devices (No Layout),

whose library is located at:


which was decompressed from:

Also, from mentioned library above, why are NMOS and PMOS, Enchancement and Depletion all have the same symbol?

Edited by: ren_zokuken01 on Feb 16, 2016 3:50 AM