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 .5 to 1500 MHz bandwidth Electrical Specifications @ 25C -- Operating Temperature -40C to +85C Impedance Ratio1 Pri:Sec (2%) 1:1 Part Number Regular Low Cost - CX2041 Turns Ratio Pri:Sec (2%) 1:1 3 dB 0.05-450 Bandwidth 2, 3 (MHz TYP) 2 dB 0.75-300 1 dB 0.1-200 Insertion Loss @ Midband (dB TYP) 0.6 Schematic Primary Pins B 4-6 CX2040 CX2040L 1:1 1:1 1.5-500 2.5-400 5-350 0.9 A 4-6 CX2043 CX2044 CX2045 CX2047 - CX2043L CX2044L CX2045L CX2047L CX2049L 1.5:1 1.5:1 1:2 1:4CT 1:8CT 1.5:1 1.5:1 1:1.414 1:2CT 1:2.83CT - - - - 2-500 - 1.0-500 - .5-300 - 1-1000 5-100 3-300 1.5-100 - 0.2 0.2 0.8 0.24 TBD D A B B B 3-6 1-3 4-6 4-6 4-6 Electrical Specifications @ 25C -- Operating Temperature -40C to +85C Impedance Ratio1 Pri:Sec (2%) Part Number CX2038 Bandwidth 2, 3 (MHz TYP) 2 dB Up to 1500 75 :75 CX2038L* Schematic Primary Pins C 4-6 C 4-6 1 dB 4.5-1000 CX2039 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: CX2040T). Mechanical Schematics RAQ Top View .150 3,81 Tape & Reel . . . . . . . . . . . . . . . . . . . . . .1000 /reel Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 /tray Power Rating . . . . . . . . .30 mA MAX; 0.25 W MAX +.020 .015 +0,51 0,38 1 Dimensions: Inches mm Unless otherwise specified, all tolerances are .010 0,25 .150 .015 3,81 0,38 3 .110 .015 2,79 0,38 There are no plated areas on side of substrate. .050 1,27 5X.030 0,76 CX204XL 5X.028 0,71 Pin 1 .050 1,27 4 B 6 2 3 CX204X .100 2,54 6 SEC : PRI 1 Side View Bottom View 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 U.S: 858 674 8100 * U.K: 44 1483 401 700 * France: 33 3 84 35 04 04 * Singapore: 65 6287 8998 * Taiwan: 886 2 2698 0228 * http://www.pulseeng.com C203.A (4/03) RF TRANSFORMERS Transformers for Wideband RF Applications Application Notes 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). C. CX2038, CX2039 and CX2043 transformer configurations do not provide DC isolation between primary and secondary windings. D. For additional impedance ratios and frequency ranges, please contact Applications Engineering. E. Pick and place operation: smooth upper surface of device allows automatic pick and place. Notes from Tables 1. Impedance and turns ratios are specified primary:secondary. (CT=Center Tap). 3. These transformers are verified to operate from -40C to +85C. Contact Applications Engineering for performance data. 2. Bandwidth is referenced to midband loss. Typical Insertion Loss @ 25C Insertion Loss (dB) CX2038 & CX2038L CX2039 & CX2039L 0 0 1 1 2 2 3 3 4 4 0.1 1 100 10 1000 1500 0.1 1 Frequency (MHz) CX2044 & CX2044L Insertion Loss (dB) CX2040 & CX2040L CX2045 & CX2045L 0 0 1 1 1 2 2 2 3 3 3 4 1 100 10 4 1 500 100 10 500 Insertion Loss (dB) 1 1 2 2 3 3 4 10 500 CX2047 & CX2047L 0 1 100 10 Frequency (MHz) CX2043 & CX2043L 0 0.1 1 Frequency (MHz) Frequency (MHz) 4 1000 1500 Frequency (MHz) 0 4 100 10 100 1000 1500 0.1 1 10 100 500 Frequency (MHz) Frequency (MHz) For More Information : UNITED STATES (Worldwide) UNITED KINGDOM (Northern Europe) FRANCE (Southern Europe) SINGAPORE (Southern Asia) TAIWAN, R.O.C. (Northern Asia) HONG KONG (China/Hong Kong) 12220 World Trade Drive San Diego, CA 92128 U.S.A. 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 6287 8998 FAX: 65 6280 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 9/F, Phase 2, Tai Sang Shatin Warehouse Centre 6 Wong Chuk Yeung Street Fotan, Shatin, Hong Kong TEL: 852 2788 6588 FAX: 852 2776 1055 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 products and/or registered trademarks of their respective owners. Printed on recycled paper. (c)2003, Pulse Engineering, Inc. C203.A(4/03)