G.SHDSL LINE TRANSFORMER For Use with Virata Chipsets Matched to Virata's Aluminum™ G.SHDSL chipset Maximum height .485" (12,32 mm) Designed to meet UL 1950 supplementary insulation requirements for working voltages up to 250 Vrms Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C Part Number Mounting Turns Ratio Line - Chip (±2%) B1078 SMT 1CT:2CS Inductance - Line Side @10 kHz,100 mV (9-6) with (8-7) shorted 4.0 mH ±10% DC Resistance Line Side Chip Side (9-8) = (7-6) (2-4) £ 3.8 W £ 3.6 W Leakage Inductance @ 100 kHz, 0.1 Vrms (2-4) with (9,8,7,6) shorted 8 µH MAX Additional Electrical Specifications Part Number Longitudinal Balance (300 kHz) B1078 £ THD (@ 50 kHz, 4 Vpp) -55 dB £ Return Loss (40 kHz - 300 kHz) -55 dB ³ Isolation Voltage (Vrms) 16.5 dB 1500 NOTE: Transformers are shipped in trays unless Tape & Reel packaging is specified by adding the suffix “T” to the part number (i.e. B1078T). Schematic Mechanical B1078 10 X .028 ± .002 0,71 ± 0,05 .695 17,65 MAX .530 13,46 MAX B1078 Date Code Country of Mfg. .605 15,37 1:2 .100 2,54 .098 2,50 .394 10,00 MAX .394 10,00 10 X .051 ± .002 1,30 ± 0,05 .516 13,11MAX 8 LINE 7 CHIP 3 4 6 .098 2,50 Weight . . . . . . . . . . . . . .6.2 grams Tray . . . . . . . . . . . . . . . . . .60/tray .485 12,32 MAX 10 X 0° 8° 9 2 Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .010 0,25 .004 MIN 0,10 .031 ± .006 10 X 0,79 ± 0,15 .005/0,13 10 SURFACES For More Information : UNITED STATES (Worldwide) UNITED KINGDOM (Northern Europe) FRANCE SINGAPORE (Southern Europe) (Southern Asia) TAIWAN, R.O.C. (Northern Asia) HONG KONG (Great China) 12220 World Trade Drive San Diego, CA 92128 U.S.A. http://www.pulseeng.com TEL: 619 674 8100 FAX: 619 674 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 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 19/F, China United Plaza 1008 Tai Nan West Street Cheung Sha Wan, Kowloon Hong Kong, China TEL: 852 2788 6588 FAX: 852 2776 1055 150 Kampong Ampat #07-01/02 KA Centre Singapore 368324 TEL: 65 287 8998 FAX: 65 280 0080 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. ©2001, Pulse Engineering, Inc. PRELIMINARY B973.P (9/01)