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Part Number: AFE5809EVM
I am trying to use AFE5809EVM Demodulator feature.
1. If possible, Can you guys please help me to design filter for 40/32 = 1.25 MHz ?
2. If possible I would like to set filter cut-off freq to 350 KHz.
Please let me know if you need any further information.
Hello Vatsal, We will look into this and provide details by May 16th.
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In reply to Praveen Aroul:
Thank you. Also, I would like to know this, How to set Down conversion frequency in GUI ? I can see there is a manual frequency EN for downconversion.
Can you please tell me how to set it to 300KHz ? I found some information in Data-sheet but not sure how to use it.
In reply to Naik:
I believe the reason for the problems using the digital demodulator on the AFE5809EVM GUI is an MSB/LSB mismatch between HSDC Pro GUI and the AFE5809EVM GUI.
The user guide needs to be updated to reflect this. Unfortunately, I won't get around to taking an in-depth look at it until maybe the end of next week.
We apologize for the delay and appreciate your patience.
In reply to Olu Sodipe:
In reply to Sahana Krishnan:
My requirement changed since. Now We are using the 20MHz clock for AFE5809. So I am looking to configure profile RAM and coefficient RAM for that.
1.) I am looking to Downconvert with 350KHz. So I am using register for that. In GUI Manual_Freq_EN = 1 and Manual_Freq = 47B, which gives me almost 350KHz mixing frequency for downconversion. Is this the correct way to do it?
1.A) Also, Is there a way that I can only get In Phase information from downconversion? I don't need Q.
2.) I want to decimate with 32. My Fs = 20MHz so after decimation I will get Fs= 20MHz/32 = 625KHz. So for that, I need low pass filter coefficients for a coefficient vector. ( I am looking for 0 to 300KHz passband for the filter).
3.) What is the Demod Freq window in GUI? just above the Fs. please see attached screenshot.
4.) I have attached a screenshot for GUI setting that I'm trying please let me know if you have any questions.
Please let me know If you have any questions.
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