COPPERHEAD HIGH SPEED SINGLE TRANSFORMER Military/Aerospace Grade Compliant with ANSI X3T111, Fiber Channel, FC-PH-3 for quarter/full speed applications, SMPTE, IEEE1394 Firewire Moisture sensitivity Level 3 Pick and place compatible IC grade package withstands 225°C peak Temperature profile Operating Temperature -55°C to +125 °C Electrical Specifications @ 25°C - Operating Temperature -55°C to +125°C Risse Time Primary Inductcance DCR Hi-Pot @20 & 80% (µH MIN) (Ω MAX) (Vrms MIN) (pS MAX) Part Number Turns Ratio (±5%) T-1062ACT 1CT : 1CT 3.75 280.000 0.2 1500 -2.00 Application Nominal Bit Rate (Mbaud) 1,062.5 (full speed) T-1250ACT 1CT : 1CT 3.75 280.000 0.2 1500 -2.00 1,250 (full speed) T-1485ACT 1CT : 1CT 3.75 280.000 0.2 1500 -2.00 1,485 (full speed) Insertion Loss (dB MAX) Mechanical T-1062ACT, T-1250ACT, T-1485ACT Schematic 1 6 2 5 3 4 PART NUMBER DATE CODE NOTE: COPLANARITY IS 0.004° (0.102MM) MAXIMUM Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 grams Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80/tube Tape & Reel . . . . . . . . . . . . . . . . . . . . . . . . . . . 750/reel Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .005 0.13 1 pulseelectronics.com M131.B (5/13) COPPERHEAD HIGH SPEED SINGLE TRANSFORMER Military/Aerospace Grade Application Notes Pulse Specialty Components has designed Fibre Channel dual transformers specifically 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 dependent 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-1062ACT T-1062ACT 6 1 3 5 2 6 1 5 2 4 3 6 4 Fig. 1 - Typical Application Circuit 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 maintain return loss and signal integrity. Transformer must be located within .50” of the DB9 connector. For More Information Pulse North America Headquarters Two Pearl Buck Court Bristol, PA 19007 U.S.A. Pulse Europe Zeppelinstrasse 15 71083 Herrenberg Germany Tel: 215 781 6400 Fax: 215 781 6403 Tel: 49 7032 7806 0 Fax: 49 7032 7806 12 Pulse China Headquarters B402, Shenzhen Academy of Aerospace Technology Bldg. 10th Kejinan Road High-Tech Zone Nanshan District Shenzen, PR China 518057 Tel: 86 755 33966678 Fax: 86 755 33966700 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/chassis ground should be “AC-coupled” to signal (digital) ground through a .027uF, 500V capacitor. Pulse North China Room 2704/2705 Super Ocean Finance Ctr. 2067 Yan An Road West Shanghai 200336 China Pulse South Asia 135 Joo Seng Road #03-02 PM Industrial Bldg. Singapore 368363 Pulse North Asia 3F No. 198, Zhongyuan Road Zhongli City Taoyuan County (32068) Taiwan Tel: 86 21 62787060 Fax: 86 2162786973 Tel: 65 6287 8998 Fax: 65 6287 8998 Tel: 886 3 4356768 Fax: 886 3 4356823 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. 2 pulseelectronics.com M131.B (5/13)