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 @ 25°C — Operating Temperature -40°C to +85°C CX2040 Impedance Ratio1 Pri:Sec (±2%) 1:1 Turns Ratio Pri:Sec (±2%) 1:1 CX2043 CX2044 CX2045 CX2047 CX2049 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 Part Number 3 dB 1.5-500 Bandwidth 2, 3 (MHz TYP) 2 dB 2.5-400 1 dB 5-350 Insertion Loss @ Midband (dB TYP) 0.9 – – – – 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 Primary Pins Schematic A 4-6 D A B B B 3-6 1-3 4-6 4-6 4-6 Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C Part Number Impedance Ratio1 Pri:Sec (±2%) CX2038 75 Ω:75 Ω Bandwidth 2, 3 (MHz TYP) 2 dB Up to 1500 Schematic Primary Pins C 4-6 C 4-6 1 dB 4.5-1000 CX2039 50 Ω:50 Ω 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 RAQ .100 2,54 .100 2,54 .050 1,27 .028 5X 0,71 1 2 Schematics 5X.030 0,76 3 6 4 SEC : PRI B 1 6 2 .150 ± .015 3,81 ± 0,38 Side View 5X.030 0,76 3 .060 .190 1,52 4,83 Top .150 ± .015 View 3,81 ± 0,38 6 .050 1,27 A 1 4 SUGGESTED PAD LAYOUT .110 ± .015 2,79 ± 0,38 6 Bottom View 2 3 Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .010 0,25 4 SEC : PRI C 6 1 4 3 PRI : SEC 4 Tape & Reel . . . . . . . . . . . . . . . . . . . . . .1000 /reel Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 /tray Power Rating . . . . . . . . .30 mA MAX; 0.25 W MAX 1 3 3 D 4 PRI SEC 6 U.S: 858 674 8100 • 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 C203.P (6/02) RF TRANSFORMERS Transformers for Wideband RF Applications Application Notes A. Bandwidth specifications for CX2040 and CX2047 are for a 50 Ω 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 -40°C to +85°C. Contact Applications Engineering for performance data. 2. Bandwidth is referenced to midband loss. Insertion Loss (dB) CX2038 - Typical Insertion Loss @ 25°C CX2039 - Typical Insertion Loss @ 25°C 0 0 1 1 2 2 3 3 4 4 0.1 1 100 10 1000 1500 0.1 1 CX2044 - Typical Insertion Loss @ 25°C Insertion Loss (dB) CX2040 - Typical Insertion Loss @ 25°C 0 1 1 1 2 2 2 3 3 3 4 100 10 4 1 500 100 10 0 1 1 2 2 3 3 0.1 4 1 1 10 100 100 10 500 Frequency (MHz) CX2047 - Typical Insertion Loss @ 25°C CX2043 - Typical Insertion Loss @ 25°C 0 4 500 Frequency (MHz) Frequency (MHz) Insertion Loss (dB) CX2045 - Typical Insertion Loss @ 25°C 0 1 1000 1500 Frequency (MHz) 0 4 100 10 Frequency (MHz) 1000 1500 0.1 1 10 100 500 Frequency (MHz) Frequency (MHz) For More Information : UNITED STATES (Worldwide) UNITED KINGDOM (Northern Europe) FRANCE SINGAPORE (Southern Europe) (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 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 products and/or registered trademarks of their respective owners. Printed on recycled paper. ©2002, Pulse Engineering, Inc. PRELIMINARY C203.P (6/02)