H0126NL Datasheet, PDF (2/2 Pages) Pulse A Technitrol Company – LAN Product Guide PC Applications

LAN Product Guide ^_ PC Applications
APPLICATION NOTES
Layering ground planes is advisable. Route connector/discrete
module ground pins to chassis/analog ground if possible.
Keep signal traces from PHY to connector/discrete module as short
as possible. If traces exceed 3-4 inches, pay close attention to line
impedance imbalance.
Using BST (75 Ω resistors and high voltage cap to chassis ground)
to terminate Cable side CTs is advisable for best EMI performance
(included in most connector solutions).
Follow PHY manufacturer’s application notes for further layout
considerations.
10/100 APPLICATION CIRCUIT
GIGABIT APPLICATION CIRCUIT
Inside the Discrete Module
Inside the Connector
10/100/1000
IC PHY
VCC
VCC
100 nF
10 nF
MD3 +
50 W
MD3 -
MD2 +
50 W
50 W
MD2 -
MD1 +
50 W
50 W
MD1 -
MD0 +
50 W
50 W
50 W
MD0 -
10 nF
10 nF
10 nF
10 nF
10 nF
Inside the Discrete Module
8 MX3 +
1:1
7 MX3 -
5 MX2 +
4 MX2 -
1:1
6 MX1 +
1:1
3 MX1 -
2 MX0 +
1:1
2X0.1 µF
Inside the Connector
4X75 W
1000 pF
2 KV
SHIELD
1 MX0 -
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Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may be trademarks or registered
trademarks of their respective owners. © Copyright, 2007. Pulse Engineering, Inc. All rights reserved.
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HJ600.C (1/07)