DP83867IS - RJ45 with Integrated Magnetics

Hello,

We have used Wurth Electronics part no 7499111000 on one of our Evaluation Modules. Please note that DP83867 can work with different magnetics as well. You can select any magnetics that meets or exceeds the following electrical parameters.

Parameter	TYP	Unit	Condition
Turn Ratio	1:1	-	± 2%
Insertion Loss	-1	dB	1-100 MHz
Return Loss	-16	dB	1-30 MHz
	-12	dB	30-60 MHz
	-10	dB	60-100 MHz
Differential to Common Rejection Ratio	-30	dB	1-50 MHz
	-20	dB	50-150 MHz
Crosstalk	-35	dB	30 MHz
	-30	dB	60 MHz
Isolation	1500	Vrms	HPOT

 

-Regards,

Aniruddha

Hi Aniruddha,

Thank you for your valuable reply.

You mean DP83867 don't have dependency much on the magnetic schematic?
If yes we can select any magnetic,So kindly confirm the same.

And also Can you please share me EVM schematic or EVM name where 7499111000 is used

Hi Aniruddh,
We want to use PN:7499111446 instead of PN:7499111000

If possible Please check this RJ45 from Wuerth PN:7499111446(Link:katalog.we-online.de/.../7499111446.pdf) and confirm as there is a change in schematic of magnetic between 7499111000 and 7499111446.

Hello,

The 7499111446 magnetics has slightly worse return loss performance as compared to the 7499111000 but it fits within the design requirement. I belive it should be ok.

7499111000 was used in the DP83867IRPAP EVM (www.ti.com/.../dp83867irpap-evm) and the schematics can be found in the user's guide for that EVM (www.ti.com/.../snlu176.pdf). Please note that although DP83867 can work with different magnetics, it is dependent on schematic connections. For e.g. the center taps of the transformer of 7499111446 need to be connected to GND using 0.1uF capacitors.

-Regards,
Aniruddha