4DSP Support Forum

Products => Virtex-6 and Kintex-7 DSP Kits => Topic started by: JohnE on March 13, 2012, 07:16 PM

Title: analog filters on FMC150 board
Post by: JohnE on March 13, 2012, 07:16 PM

Perhaps I am being thick, but I do not see the characteristics of the analog input filter for the ADC. Are you using something similar to the 5th order 82MHz Chebyshev LPF mentioned for the DAC? What about the low-frequency attenuation from the transformers? Is this documented anywhere?

Title: Re: analog filters on FMC150 board
Post by: pierrehic on March 13, 2012, 08:55 PM

There is no low pass filter on the A/D path. Please refer to the attached schematics.
For the main analog characteristics of the FMC150 you may also refer to paragraph 4.3 of the user manual: http://www.4dsp.com/pdf/FMC150_user_manual.pdf

Title: Re: analog filters on FMC150 board
Post by: JohnE on March 14, 2012, 01:02 PM

Thank you for your prompt and helpful response.

Do you have additional information regarding the low-frequency rolloff imposed by the transformers?

Title: Re: analog filters on FMC150 board
Post by: pierrehic on March 14, 2012, 01:17 PM

Please refer to transformer datasheet: http://www.minicircuits.com/pdfs/TC1-1T+.pdf 

Title: Re: analog filters on FMC150 board
Post by: goel@ti.com on May 30, 2013, 11:27 AM

We have two generations of FMC150 rev1.2 and rev2.1. Is it possible to get schematics for both and functionality differences between them? Thanks.


Manish

Title: Re: analog filters on FMC150 board
Post by: arnaudNL on June 07, 2013, 05:16 AM

Dear Manish,


Sorry for the late answer, I failed receiving the notification.


Please find both schematics attached, they are public domain.


Best Regards,
Arnaud

Title: Re: analog filters on FMC150 board
Post by: arnaudNL on June 07, 2013, 05:18 AM

The 2.1 schematic is not yet available.