Part Number: LMX2572
Dear TI Team,
I want to design a multi channel transmit array which will be integrated to an antenna array in order for beam scanning purposes. My main motivation is to generate the RF signal on each channel rather than generating a central RF, distributing to all channels and adjusting the phase. So, while generating the RF on each channel I need to be able to adjust the phase. Rather than using DDS, PLL usage seems to me much more economical since I will not produce complicated waveforms and DDS components seem to be much more expensive.
As far as I have investigated the application notes and datasheets, phase adjustment capability of the LMX2572 is limited in terms of phase range at a single adjustment especially if you are using the channel divider at the output. In the datasheet the phase value is given as:
360° × (MASH_SEED / PLL_DEN) × (P / CHDIV)
My question is that, is there a restriction for phase adjustment in the range of 0-360? I mean one will be able to adjust the phase in the full range of 0-360 with multi steps if necessary, right? Also what is the approximate time duration it takes to set the phase for just a single adjustment step?
Best regards,
Egemen YILDIRIM
Best regards,
Egemen YILDIRIM