Simulation of ADS8681 in Keysight ADS

pragash sangaran78

Other Parts Discussed in Thread: ADS8681

I'm new to mixed-signal simulation in ADS. I would like to simulate ADS8681 with front end RF circuits in Keysight ADS. The IBIS model is the best way to import? I have already imported the model.

1) There are two models available. ADS8681PW and ADS8681RUM. which model is the best or more accurate?

2) there are many sets of data available, Typ, Min, Max, Fast, and Slow. how do I know the parameters such as sampling rate and sensitivity of each set of data?

3) the IBIS model after import is shown in the figure below. in is input. what is PC, GC and DigO?

As im new to ADC simulation in ADS, any application notes sharing will be very helpful. thanks in advance.

over 4 years ago

0 Dale Li over 4 years ago

TI__Mastermind 39475 points

Hi pragash,

This is your 3rd exactly same post as below on this forum, I will have to close this one.

e2e.ti.com/.../3566679

Best regards,

Dale

0 pragash sangaran78 over 4 years ago in reply to Dale Li

Genius 3150 points

hi Dale,

please dont close this. you asked me to post in the simulation forum and this is the post. please close the other two posts but this!

0 pragash sangaran78 over 4 years ago in reply to Dale Li

Genius 3150 points

hi, dale,

Please don't close this. You asked me to publish the question in simulation forum, and this is it! You can close the other two!

0 Tom Hendrick over 4 years ago in reply to pragash sangaran78

TI__Guru**** 174820 points

Hi Pragash,

I believe Dale answered questions 1 and 2 in one of the other threads. For question 3, please refer to our application note SNLA046. PC and GC are power and ground clamp nodes while DigO is a digital I/O. Your desire to simulate/model the front end of the ADS8681 is not something the IBIS model will be able to do. We have an ADS8681 TINA spice model which is more suited to the actual front end sampling characteristics of the ADS8681. Please do start there with the understanding that the TINA model is only looking at the sampling characteristics of the ADS8681.

0 pragash sangaran78 over 4 years ago in reply to Tom Hendrick

Genius 3150 points

can Tina spice model be imported into Keysight ADS and simulated there? is there any example or application note on Keysight ADS simulation of the spice model?

0 Tom Hendrick over 4 years ago in reply to pragash sangaran78

TI__Guru**** 174820 points

Hi Pragash,

I am not familiar with the Keysight ADS tool, so I do not know if there are capabilities to import SPICE models into thier simulation environment. You can also review this post which may help you in your quest.

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

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Simulation of ADS8681 in Keysight ADS