AWR1642: Silicon Errate ANA#08: Doppler Spur Observed for Narrow Chirps Spanning 79.2 GHz condition?

James Austrial

Expert 4090 points

Part Number: AWR1642

Could you tell us how narrow/slow ramp near 79.2GHz would lead to this error? (For example 100MHz BW, 2MHz Slope…)

If you have a profile to reproduce this issue, it’s even better…

over 6 years ago

0 Jitendra Gupta over 6 years ago

TI__Guru 69960 points

Hi James,
Please allow me a day to fetch out this information from our team.

Regards,
Jitendra

0 James Austrial over 6 years ago in reply to Jitendra Gupta

TI__Expert 4090 points

Hi Jitendra,

Any feedback for this errata?

0 Vivek Dham over 6 years ago in reply to James Austrial

TI__Guru 58035 points

Hello James,
Larger sweep BW reduces the spur amplitude. The exact BW to be used depends on the system algorithm and the spur amplitude it can tolerate. So it would be user specific.

Regards,
Vivek

0 James Austrial over 6 years ago in reply to Vivek Dham

TI__Expert 4090 points

Thanks for explanation and will cowork with customers to avoid this.

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AWR1642: Silicon Errate ANA#08: Doppler Spur Observed for Narrow Chirps Spanning 79.2 GHz condition?