T-330ACT Datasheet, PDF (2/2 Pages) Pulse A Technitrol Company – COPPERHEADTM HIGH SPEED SINGLE TRANSFORMER

COPPERHEAD^TM HIGH SPEED
SINGLE TRANSFORMER
Military/Aerospace Grade
Application Notes
Pulse Specialty Components has designed Fibre Channel dual transformers spe-
cifically for point to point coupling to 150 twinax cable. The isolation transformers
protect the station from static charges that may develop on the cable, and prevents
ground loop currents from being transferred between stations. The devices have
also been designed to provide common mode rejection within the transmission band
and thus reduce EMI. The wide bandwidth of these devices minimizes data depen-
dent jitter by providing fast signal rise times. Low-end bandwidth also minimizes
base-line wander, another contributor to jitter. The dual package allows connection
of both transmit and receive channels, as shown in the application circuit below.
Surface-mount packaging also allows a cost-effective solution.
T-330ACT
T-1062ACT
6
5
T-330ACT
T-1062ACT
2
1
6
1
6
5
2
3
4
3
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Fig.1-TypicalApplicationCircuit
1. The transformer, 51Ω resistors, and the impedance of the driver are
matched to achieve the best return loss (S11) for the transmitter of the
150Ω system.
2. The total impedance of termination resistor network is 150 Ω.
3. When laying out PCB, transmission line methods must be utilized to main-
tain return loss and signal integrity. Transformer must be located within
.50” of the DB9 connector.
4. It is recommended that the center tap (CT) of transformer(s), cable side,
be connected to earth/chassis (cable shield) ground either directly or via
a transient voltage suppressor (TVS) type component and earth/chas-
sis ground should be “AC-coupled” to signal (digital) ground through a
.027uF, 500V capacitor.
For More Information
Pulse North America
Pulse Europe
Headquarters
Zeppelinstrasse 15
Two Pearl Buck Court 71083 Herrenberg
Bristol, PA 19007
Germany
U.S.A.
Tel: [phone]
Fax: [phone]
Tel: [phone]
Fax: [phone]
Pulse China Headquarters
B402, Shenzhen Academy of
Aerospace Technology Bldg.
10th Kejinan Road
High-Tech Zone
Nanshan District
Shenzen, PR China 518057
Tel: [phone]
Fax: [phone]
Pulse North China
Room 2704/2705
Super Ocean Finance Ctr.
2067 Yan An Road West
Shanghai 200336
China
Tel: [phone]
Fax: [phone]
Pulse South Asia
135 Joo Seng Road
#03-02
PM Industrial Bldg.
Singapore 368363
Tel: [phone]
Fax: [phone]
Pulse North Asia
3F No. 198, Zhongyuan Road
Zhongli City
Taoyuan County (32068)
Taiwan
Tel: [phone]
Fax: [phone]
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, 2013. Pulse Electronics, Inc. All rights reserved.
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