Revision(s) Affected:

IWR2944 ES1.0, ES2.0

Description:

Digital filtering activity can potentially couple to analog circuits leading to spurs in the LO, which may also be seen in the Rx data. Such a spur in the Rx data would be seen at the spur frequency offset around a strong object.

Following are the different spurs that can potentially be observed:

1. Spurs at (2Fs-40) MHz IF frequency for sampling rate +/-0.5Msps around 20 Msps.
2. Spurs at (2Fs-60) MHz IF frequency for sampling rate +/-0.5Msps around 30 Msps.
3. Spurs at (4Fs-140) MHz IF frequency for sampling rate +/-0.3Msps around 35 Msps.
4. Spurs at (4Fs-100) MHz IF frequency for sampling rates in the range 22 to 23.5 Msps and 26.5 to 28 Msps

[Fs=Profile Sampling Rate]

Workaround(s):

The user should avoid sampling rates in the range mentioned above or use exactly the center of the sampling rate range (so that spur is at 0 Hz).