Direct Digital Synthesizer that can chirp 0-2 GHz in <10us

Donjie Billy Hipolito

Other Parts Discussed in Thread: DAC39RF10

Hi Experts,

I have a customer that is asking for a device Direct Digital Synthesizer that can chirp 0-2 GHz in <10us. I am just wondering if we have that kind of device.
Your response is highly appreciated. Thank you.

over 2 years ago

0 Chase W over 2 years ago

TI__Mastermind 23780 points

Hi Donjie,

We are checking if our new device DAC39RF10 can do this. Our primary support engineer for this device is currently out of office so there might be a slight delay here. Kindly await a response.

Thanks, Chase

0 Matthew Kramer over 2 years ago

TI__Expert 3450 points

Hey Donjie,

We do have several high-speed DACs that are capable of DDS, however they are not capable of programmable chirps and can only generate a single tone per SPI write. The DAC39RF10 does have a fast SPI link that can update the NCO fairly quickly, however this will require a fast-programming device like an FPGA to push all the necessary NCO words to the device in real time to generate the chirp.

So the question becomes what kind of resolution would they need between tones? How many tones would they need between 0 and 2GHz? From there we could extrapolate if it was possible to do if we have a high speed FPGA to program the device. This is quite a bit of overhead however.

Thanks and Regards,

Matt

0 Donjie Billy Hipolito over 2 years ago in reply to Matthew Kramer

TI__Prodigy 211 points

This is noted Matthew. I appreciate the help and thank you for the response. Will relay this to the customer.

0 Donjie Billy Hipolito over 2 years ago in reply to Chase W

TI__Prodigy 211 points

Thank you Chase.

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Direct Digital Synthesizer that can chirp 0-2 GHz in <10us