TINA-TI: Intermodulation distortion

Clive Read

Prodigy 60 points

Part Number: TINA-TI

Is there a way of using Tina to measure intermodulation distortion?

over 4 years ago

0 Ed Walker over 4 years ago

Prodigy 5 points

Hello Clive,

Thank you for posting.

This would be an excellent question for DesignSoft/TINA.
Please use this support page: http://www.tina.com/technical-support/

If your query is not resolved satisfactorily please let us know by replying back to this thread.

0 Michael Steffes over 4 years ago

Guru 47485 points

Hey Clive,

It is certainly possible to do this but keep in mind the op amp and FDA models do not support distortion performance. The models will of course deliver a number - its connection to the part is suspect.

0 kai klaas69 over 4 years ago

Guru 140200 points

Hi Clive,

I think this would do what you want. In the following a 19kHz / 20kHz intermodulation test is shown:

intermodulation.TSC

As test object a non-ideal discrete OPAmp is used. This is followed by three active low pass filters put in series to filter out the 19kHz and 20kHz test signals. What remains is the 1kHz intermodulation product.

Kai

0 kai klaas69 over 4 years ago in reply to kai klaas69

Guru 140200 points

Hi Clive,

does my scheme work for you?

Kai

Amplifiers

Amplifiers forum

TINA-TI: Intermodulation distortion