Part Number: ADC34J45EVM
My name is Fernando Sanz. I'm a Cosmic ray researcher.
I am sorry to take your time but I have to explain my problem a little bit.
For a few years I was studying the theoretical aspects of radio detection of cosmic rays.
Now, I'm eager to setup a simple but effective experiment just to see how it works in real life.
I know that there are some very professional researchers in this field in the world but my goal is not that complicated.
To achieve my goal, I need few devices including an ADC and a data capture card.
Since my selection list of a band pass filters is limited, I have to choose the ADC wisely to satisfy my needs as well as the Nyquist criteria.
My band pass filter has a passband of 55-67 and stopbands at 44-79 MHz and my 4 antennas are going to work in 30-80 MHz frequency range.
that means for an oversampling I should go beyond 158 MSPS or stay at 80 MSPS to be in the second Nyquist zone.
Now, all I want is to be able to capture the signals from the antennas and to be able to do few things:
1- to Save and store signals for later (offline) analyzes.
2- To be able to remove signals which are weaker than an specific strength.
3- To be able to store data only if they've come from all channels in an specific time windows.
4- if there be an option for an external triggering it would be really good because I may be able to add a particle detector as a trigger to this setup in the future
I searched Ti's products and I'm wondering whether ADC34J45EVM with TSW14j50EVM or any other product can do the job for me.
Please Help me.
Thank you and sorry for my bad English.
High Speed Products
In reply to Ken C:
In reply to Fernando Sanz:
Yes you can automate HSDC pro with labview or matlab - this will allow you to control HSDC Pro with Matlab or Labview. Once you can control HSDC pro then you can control any of our capture cards (TSW14xxxx). Look in this installation directory for examples.
C:\Program Files (x86)\Texas Instruments\High Speed Data Converter Pro\HSDCPro Automation DLL\Manual and Examples
The memory depth does not limit the sampling speed. You can still use the ADC at 160Msps, it will store each of those samples from each channel at speed. However you will only be able to capture enough time to fill the memory. In this case you will only be able to capture 64Msamples per channel (4 channels) and at 160Msps that will be about .4s. The TSW14J56 will be able to capture more time if needed.
How fast the ADC samples and how much memory you have are 2 independent things. You could have a 1 sample depth memory - and you would only be able to save 1 sample from the ADC regardless if the ADC was running 1sps or 160Msps.
In this case you have access to 256Msamples of memory to be used for 4 channels. This means you can store up to 64Msamples for each channel. If you run the ADC at 160Msps, then you can store up to 64Msamples/160Msamples/sec=0.4s of time.
At 160MSps ADC rate you are getting time resolution of 1/160M=6.25ns time slice per sample.
Does this make sense or am I not understanding your intended use case?
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