TSW1400EVM

Hey Francisco,

Can you please explain what you mean by inadequate? Are you able to get a capture, but the spectrum is not clean? or are you even able to get a capture? It would be best for you to provide a snapshot of the issue you are seeing.

Also, make sure your power supply is set to 5V and that current limit is at least 4A. Please provide details on the configuration details such as clock rate, input frequency, etc.

Thanks

Yusuf

Hi Yusuf, 

I am in the same group project with Francisco.

This is our problem, when I use the  20M clock 2Vpp, Input 50kHz 2Vpp, I got the problems of 2 cases:

• If we can capture only once, we have to re-download firmware.(percent successful for redownload it is < 50%) (picture of capture above ENOB 7.46bits). Then we can not get the other capture. we have to redownload again.
• If we can capture more than once, the ENOB bits keep decrease every time we capture from ~8 until it get down to less than 1 as shown.

Above are the screen captures of the output. I also try with the clock of fixed 200MHz. But the problems are the same. 

All the power for TSW1400EVM and ADC5484EVM meet the requirement. 

Please response soon to us as our project is due on noon Monday. Thanks so much.

Hey Linh,

It seems the problem you are seeing has been previously reported in another post. Reference the following post:
e2e.ti.com/.../788170

Yusuf

Hi Yusuf,

My name is Thinh Le and I reported the problem in the link you sent above. Both Francisco and Linh are my teammates and we are working on the same project. I also updated this issue to my post. If you have any suggestion or solution for this issue, please share with us.

Best regards,

Thinh