RF TRANSFORMERS Transformers for Wideband RF Applications Miniature surface mount package Various impedance ratios available Excellent insertion loss Ideal for Balanced-to-Unbalanced applications Products from 0.5 to 1500MHz bandwidth Electrical Specifications @ 25C -- Operating Temperature -40C to +85C Impedance Ratio1 Pri:Sec (2%) 1:1CT 1:1 1.5:1 1.5:1 1:2CT 1:4CT 1:8CT 36:1CT Part Number CX2041 CX2040L CX2043L CX2044L CX2045L CX2047L CX2049L CX2029 Turns Ratio Pri:Sec (2%) 1:1CT 1:1 1.5:1 1.5:1 1:1.414CT 1:2CT 1:2.83CT 6:1CT 3dB 0.05-450 1.5-500 - - - - 0.1-500 0.05-21 Bandwidth 2, 3 (MHz TYP) 2dB 0.75-300 2.5-400 - 1.0-500 - 0.5-300 0.3-400 - 1dB 0.10-200 5-350 1-1000 5-100 3-300 1.5-100 0.5-200 - Insertion Loss @ Midband (dB TYP) 0.60 0.90 0.20 0.20 0.80 0.24 1.16 0.40 Schematic Primary Pins B A D A B B B B 4-6 4-6 3-6 1-3 4-6 4-6 4-6 4-6 Electrical Specifications @ 25C -- Operating Temperature -40C to +85C Part Number Impedance Ratio1 Pri:Sec (2%) CX2038L 75:75 Bandwidth 2, 3 (MHz TYP) 2dB Up to 1500 Schematic Primary Pins C 4-6 C 4-6 1dB 4.5-1000 CX2039L 50:50 Up to 1500 4.5-1000 NOTE: Optional Tape & Reel packaging can be ordered by adding a "T" suffix to the part number (ex: CX2041T). Mechanical Schematics RACKET-LITE Top View Tape & Reel . . . . . . . . . . . . . . . . . . . . . .1000 /reel Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 /tray Power Rating . . . . . . . . .30 mA MAX; 0.25 W MAX +.020 .150 .015 3,81 +0,51 0,38 Dimensions: Inches mm Unless otherwise specified, all tolerances are .010 0,25 1 .150 .015 3,81 0,38 .110 .015 2,79 0,38 5X.030 0,76 .100 2,54 5X.028 0,71 Pin 1 .050 1,27 6 4 PRI : SEC B 6 2 3 Plated Sides Bottom View 3 1 Side View .050 1,27 A 1 .100 2,54 C 6 5X.030 0,76 .060 .190 1,52 4,83 4 SEC : PRI 1 4 3 PRI : SEC 3 D 4 PRI SEC SUGGESTED PAD LAYOUT 6 USA 858 674 8100 * UK 44 1483 401 700 * France 33 3 84 35 04 04 * Singapore 65 6287 8998 * Shanghai 86 21 32181071 * China 86 769 5538070 * Taiwan 886 2 26980228 www.pulseeng.com C203.B (8/05) RF TRANSFORMERS Transformers for Wideband RF Applications Application Notes D. For additional impedance ratios and frequency ranges, please contact Pulse Applications Engineering. A. Bandwidth specifications for CX2040 and CX2047 are for a 50 system. B. Materials used in the products are UL94-V0 recognized. Products meet requirements of IEC 695-2-2 (Needle Flame Test). E. Pick and place operation: smooth upper surface of device allows automatic pick and place. C. CX2038, CX2039 and CX2043 transformer configurations do not provide DC isolation between primary and secondary windings. F. For availability of Lead-Free version of this product, please contact Pulse. Notes from Tables 3. These transformers are verified to operate from -40C to +85C. Contact Pulse Applications Engineering for performance data. 1. Impedance & turns ratios are specified primary:secondary. (CT=Center Tap). 2. Bandwidth is referenced to midband loss. Typical Insertion Loss @ 25C CX2040L Insertion Loss (dB) CX2041 0 0 1 1 2 2 3 3 4 4 0.1 1 100 10 Frequency (MHz) 1 500 Insertion Loss (dB) 0 1 1 2 2 3 3 1 100 10 Frequency (MHz) 1000 1500 1 0 0 1 1 2 2 3 3 4 4 10 Frequency (MHz) 10 100 500 100 500 Frequency (MHz) CX2047L CX2045L Insertion Loss (dB) 500 4 0.1 1 100 CX2044L CX2043L 0 4 10 Frequency (MHz) 100 500 0.1 1 10 Frequency (MHz) USA 858 674 8100 * UK 44 1483 401 700 * France 33 3 84 35 04 04 * Singapore 65 6287 8998 * Shanghai 86 21 32181071 * China 86 769 5538070 * Taiwan 886 2 26980228 www.pulseeng.com C203.B (8/05) RF TRANSFORMERS Transformers for Wideband RF Applications Typical Insertion Loss @ 25C CX2029 Insertion Loss (dB) CX2049L 0 0 1 2 2 4 3 8 4 16 0.1 1 100 10 500 Frequency (MHz) 0.5 1 10 Frequency (MHz) 100 500 Insertion Loss (dB) CX2038L 0 1 2 3 4 0.1 1 10 100 1000 1500 100 1000 1500 Frequency (MHz) Insertion Loss (dB) CX2039L 0 1 2 3 4 0.1 1 10 Frequency (MHz) For More Information: Pulse Worldwide Headquarters Pulse Northern Europe Pulse Southern Europe Pulse Pulse North China China Headquarters Room 1002 12220 World Trade Drive San Diego, CA 92128 U.S.A. www.pulseeng.com TEL: 858 674 8100 FAX: 858 674 8262 3 Huxley Road 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 No. 1 Industrial District Changan, Dongguan China TEL: 86 769 5538070 FAX: 86 769 5538870 No. 819 Nanjing West Rd Shanghai China TEL: 86 21 32181071 FAX: 86 21 32181396 Pulse South Asia Pulse North Asia 150 Kampong Ampat #07-01/02 KA Centre Singapore 368324 3F-4, No. 81, Sec. 1 Hsin Tai Wu Road Hsi-Chih Taipei Hsien Taiwan TEL: 886 2 26980228 FAX: 886 2 26980948 TEL: 65 6287 8998 FAX: 65 6280 0080 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. (c) Copyright, 2005. Pulse Engineering, Inc. All rights reserved. www.pulseeng.com C203.B (8/05)