TMS320F28379D: ADC SPICE model

Lenio Cacula

I understand that the steps to setup an ADC SPICE model for the F28379D have already been discussed in several forum posts. My question is whether we have a model already setup that can be used as a starting point.

Thank you!

over 8 years ago

0 Devin Cottier over 8 years ago

TI__Guru 60865 points

Hi Lenio,

We can provide the TINA file. Do you need the 12-bit single-ended model, the 16-bit differential model, or both?

0 Lenio Cacula over 8 years ago in reply to Devin Cottier

TI__Genius 16880 points

Since this is an evaluation, I would like to have both. Thanks Devin!

0 Devin Cottier over 8 years ago in reply to Lenio Cacula

TI__Guru 60865 points

Hi Lenio,

Models attached.

SopranoADCInputModelsTINA.zip

For the impedance models you can look at the trade-offs between settling error, external R+C, and S+H duration.

For the sample rate models, you can use the minimum S+H as long as you have a very large capacitor on the ADC input. Here, the trade-offs are between sample rate, steady-state settling error, and the external R.

Note that I have setup the 16-bit simulations in an equivalent single-ended format. This is a little easier to play with because you don't have to keep changing pairs of values. You can convert between SE and DE representation with some help from this app. note:

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28379D: ADC SPICE model