AD9361 Sample Rate

Question

I have PicoZed SDR SOM Z7035/AD9361 Development Kit.

On the repository https://github.com/analogdevicesinc/libiio in examples I found ad9361-iiostream.c.

In this file author set sample rate 2.5 MS/s for rx and tx.

In datasheets I did not found information about recommended sample rate for AD9361.

Can somebody help me to know what is recommended sample rate for AD9361?

Former Member · Accepted Answer

The sample rate depends on your specific needs. In the case of Rx, a lower sample rate will produce less data, which will require less storage, processing, etc. But it will also "see" less bandwidth. So, if you're looking for a signal that's 1 MHz wide, 2.5MS/s will be fine. But if you're looking for a signal that's 10 MHz wide, 2.5MS/s won't be enough. Since they're complex samples, 2.5MS/s will give you 2.5 MHz of bandwidth, though the outer edges will begin to roll off, so I'd recommend sampling at least a little bit higher than the bandwidth you need.

If you're not familiar with the theory, you should read up on sampling, Nyquist, etc.

Pat

AD9361 Sample Rate

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