Part Number: LMX2594 We want to check LMX2594's test data for output power on inductor pullup.
If there any document or information below, please let me know.
①Datasheet P16 Figure20 is described output power normalized to maximum output power with…
8625.High Frequency Open Collector Outputs.pdf Faut,
At these higher frequencies, consider using a smaller inductor, like 1 NH.
Also, I am attaching this informal document that discusses the output power in depth. It is based on the LMX2594
Regards…
Prahlad,
We have an IBIS model on the website and if I don't know how to create IBIS models.
That being said, the critical information needed for the output is the output impedance and output power and the proper way to terminate this. The following…
Hi Arye,
The owner of LMX2594 doesn't recall the part number of inductor he used for datasheet. But there's a document on output power: High Frequency Open Collector Outputs.pdf
Theoretically, you probably need to use an inductor whose SRF is close…
Hi
Vicente
As shown in the attached file, LMX2594PSEVM is equipped with two PLL-ICs. Therefore, I think I can output 5.8GHz from one IC and 5.9GHz from the other IC. I would like to know this method. Do you have any good materials? LMX2594PSEVM.p…
5305.High Frequency Open Collector Outputs.pdf Toshihiro-san,
At 15 GHz, you CANNOT ignore losses on the board, which could easily be more than 3 to 4 dB.
The datasheet numbers have losses de-embedded. The following document gives more details in…
7840.High Frequency Open Collector Outputs.pdf Braedon,
The IBIS model can be used to model the inputs and the outputs. That being said, I would not trust it for modeling the high frequency outputs. You might find this attached document is more useful…
8713.High Frequency Open Collector Outputs.pdf Vinayak,
Enabling these output buffers increase the total board current consumption on the order of 90 mA per buffer, so I am assuming most of this is going through the pull-up. You can see this by taking…
AY,
Indeed there are losses and also loss due to mismatch. The attached document has a chapter on the end that discusses how the output power was measured.
Also on the LMX2594 EVM, we had a few that had some poorly soldered SMA connectors, especially…
4571.High Frequency Open Collector Outputs.pdf Anton,
Yes, this was just raw data that I had handy, but I don't have time to always do everything perfectly and without error.
Many times with this kind of thing, I find an error in my automated test…
