LMX2592: LMX2592 CHIP PCB RECOMMENDATIONS

Pollai Prasanth

Part Number: LMX2592

Tool/software:

We are developing a board using LMX2592 chip. what is the recommendation for PCB layout. how many layers are recommended, PCB material and trace thickness.

Regards

P Prasanth

1 month ago

0 vicente flores prado 1 month ago

TI__Mastermind 22861 points

Hi Prasanth,
The LMX2952EVM uses a 4-layer board thus at a minimum I would recommend that as well.

Traces need to be impedance controlled to 50Ohm - the answer to your question really varies depending on layer stackup.

You can find Gerbers & Altium file for the EVM board as reference for your use here: (+) LMX2592EVM Gerber file and Waveform of output - Clock & timing forum - Clock & timing - TI E2E support forums

Best regards,

Vicente

0 Pollai Prasanth 1 month ago in reply to vicente flores prado

Prodigy 30 points

Thank you for replying.

could you please tell me range of RFOUTAP& RFOUTAM as well RFOUTBP& RFOUTBM.

Regards

P Prasanth

0 vicente flores prado 1 month ago in reply to Pollai Prasanth

TI__Mastermind 22861 points

Hi Prasantj,

RFout max is 9.8GHz for both outputs.

Best regards,

Vicente

0 Pollai Prasanth 1 month ago in reply to vicente flores prado

Prodigy 30 points

Then I want to terminate 50ohm resistor to RF_OUTBP and RF_OUTBM as well RF_OUTAM. and can i use only RF_OUTAP as an output?

one more thing can i use Linux driver for LMX2592 by adding driver to petalinux environment. or else we do our own program using registers?

Regards

P Prasanth

0 vicente flores prado 1 month ago in reply to Pollai Prasanth

TI__Mastermind 22861 points

Hi Pradanth,

Yes you can use one output SE.

Correct termination for unused pins are in DS.

If you use a Linux driver to program it’ll be up to you to figure out how to implement.
TICSpro GUI can export a .txt file with data payload info for your driver.

Best regards,

Vicente