SONET/SDH Dual Line Interface Transformer for E4/STM-1 Applications Compliant with ITU-T/G.703 Supports 139.264 (E4) and 155.52 (STM-1) Mbps for Coded Mark Inversion (CMI) interfaces Designed to interface with Level One’s LXT6155 for use with 75 W coaxial cable Dual design supports transmit and receive circuitry Designed for fast rise time and low signal distortion Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C Part Number Turns Ratio (±5%) ST6200T 1:1 Primary Inductance OCL (µH MIN) @ 20m Vrms, 100 kHz 36.0 Leakage Inductance LL (nH MAX) 100 Interwinding Capacitance CWW (pF MAX) 6.0 DC Resistance DCR (W MAX) .30 Hipot (Vrms MIN) 1500 Note: Modules are packaged in tubes unless Tape & Reel packaging is specified. Add the suffix “-R” (such as ST6200T-R) for Tape & Reel orders. Tape & Reel parts can only be ordered in multiples of 1000 pieces. Mechanical Schematic ST6200T .092 2,34 .350 8,89 .050 1,27 .457 MAX 11,61 T1 .405 .221 10,29 5,61 PIN 1 ST6200T DATE CODE .260 MAX 6,60 .350 8,89 14X 16 2 15 3 14 .375 MAX 9,53 CTRY ORIGIN REV .068 1,73 MAX 1 .050 1,27 .030 0,76 SUGGESTED PAD LAYOUT T2 6 11 7 10 8 9 .233 MAX 5,92 .003/.020 0,08/0,51 .004 / 0,102 16 SURFACES Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .010 0,25 U.S: 858 674 8100 .020 0,51 MIN 0 - 8° Weight . . . . . . .1.0 grams (max) Tape & Reel . . . . . . . .1000/reel Tube . . . . . . . . . . . . . . .42/tube · U.K: 44 1483 401 700 · France: 33 3 84 35 04 04 · Singapore: 65 287 8998 · Taiwan: 886 2 2698 0228 · http://www.pulseeng.com PRELIMINARY A105.P (10/99) SONET/SDH Dual Line Interface Transformer for E4/STM-1 Applications Application Notes: Pulse has designed the ST6200T, SONET/SDH dual line interface transformer specifically for high-speed, STM-1/E4 serial data interfaces utilizing 75 W coax cable. The isolation transformer protects the station from static charges that may develop on the cable and prevents ground loop currents from being transferred between stations. These devices have also been designed to provide inherent common rejection within the transmission pass band and thus reduce EMI. The high bandwidth of these devices minimizes data dependent jitter (DDJ) by providing fast signal rise times with minimal signal distortion. Insertion loss is typically less than –3 dB within 10 MHz to 320 MHz passband and return loss is typically greater than –15 dB (8 MHz to 240 MHz) with 75 W load (this can be effected by circuit board layout and other external electrical parasitics). With traditional coaxial links, the transformer also provides a balanced differential to single-ended connection between the transmitter/receiver IC and the coax. The dual package allows connections of both transmit and receive channels as shown in the Application Circuit below. The auto-insertable SMD packaging allows for a cost-effective solution for the application. Application Circuit: Vcc RX 1/2 ST6200T RTIP 75 W COAX 1/2 ST6200T TTIPO TRINGO 1:1 1:1 C1 Vcc TX R1 R2 R3 RRING R4 TX RX R5 1/2 ST6200T TTIPO 75 W COAX 1/2 ST6200T RTIP R6 TRINGO 1:1 RRING 1:1 C2 NOTES: 1. Resistors R1, R2, R4, R5: 37.5 W, 2%, 1/4W 2. Resistors R3 and R6: 75 W , 2%, 1/4W For More Information : UNITED STATES (Worldwide) UNITED KINGDOM (Northern Europe) FRANCE (Southern Europe) SINGAPORE (Southern Asia) TAIWAN, R.O.C. (Northern Asia) 12220 World Trade Drive San Diego, CA 92128 Quick-Facts: 619 674 9672 http://www.pulseeng.com TEL: 858 674 8100 FAX: 858 674 8262 1 & 2 Huxley Road The Surrey Research Park Guildford, Surrey GU2 5RE United Kingdom TEL: 44 1483 401700 FAX: 44 1483 401701 Zone Industrielle F-39270 Orgelet France TEL: 33 3 84 35 04 04 FAX: 33 3 84 25 46 41 150 Kampong Ampat #07-01/02 KA Centre Singapore 368324 TEL: 65 287 8998 FAX:65 280 0080 3F-4, No. 81, Sec. 1 HsinTai Wu Road Hsi-Chih, Taipei Hsien Taiwan, R.O.C. Tel: 886 2 2698 0228 FAX: 886 2 2698 0948 DISTRIBUTOR 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. Printed on recycled paper. ©1999, Pulse Engineering, Inc. PRELIMINARY A105.P (10/99)