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| WIDEBAND RF TRANSFORMERS Upstream Transformers for Set-Top Box and Cable Modem Applications Optimized for 5-80 MHz operating frequency Less than 20 dB return loss Excellent insertion loss Operating temperature of -40C to +85C Electrical Specifications @ 25C -- Operating Temperature -40C to +85C Bandwidth 2, 3 Insertion Loss OCL Primary (MHz TYP) @ Midband (H MIN) (dB TYP) 3 dB 2 dB 1 dB C2020 1CT:1CT 1CT:1CT .150-210 .200-150 .350-90 .54 35 C2022 1:4CT 1:2CT .100-500 .150-390 .300-220 .45 50 NOTE: Optional Tape & Reel packaging can be ordered by adding a "T" suffix to the part number (ex: C2020T). Part Number Impedance Ratio Pri:Sec (2%) Turns Ratio Pri:Sec (2%) 1 Return Loss4 5 MHz - 65 MHz (dB TYP) >20 dB >20 dB Schem. A B Primary Pins 1-3 1-3 Mechanical LS Schematics 6 5 4 .258 6,55 1 2 3 A 6 5 4 .390 9,91 C202X DATE CODE .275 MAX 7,00 .040 1,02 .240 6,10 .075 1,91 1 B 6 5 1 2 3 .300 MAX 7,62 SUGGESTED PAD LAYOUT 3 4 .250 6,35 .100 2,54 .200 5,08 Weight . . . . . . . . . . . . . .0.6 grams Tape & Reel . . . . . . . . . . . .500/reel Tube . . . . . . . . . . . . . . . . . .70/tube Dimensions: Inches mm Unless otherwise specified, all tolerances are .010 0,25 PRELIMINARY C200.P (2/00) * * * * * * * * * * * * * * * * * * * * 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 WIDEBAND RF TRANSFORMERS Upstream Transformers for Set-Top Box and Cable Modem Applications Application Notes C. Materials used in the products are UL94-V0 recognized. Products meet the requirements of IEC 695-2-2 (Needle Flame Test). Notes from Tables 1. Impedance and turns ratios are specified primary:secondary. (CT=Center Tap). 2. Bandwidth is referenced to midband loss. 3. The insertion loss of these transformers is verified from -40C to +85C. Insertion loss over this temperature range is less than 1 dB from 5-80 MHz (relative to midband loss). 4. Return loss performance changes with change in temperature. C2020 - Typical Insertion Loss 0 Insertion Loss (dB) 1 2 3 4 0.1 1 10 100 500 Frequency (MHz) C2022 - Typical Insertion Loss 0 Insertion Loss (dB) 1 2 3 4 0.1 1 10 100 500 Frequency (MHz) For More Information : UNITED STATES (Worldwide) 12220 World Trade Drive San Diego, CA 92128 Quick-Facts: 858 674 9672 http://www.pulseeng.com TEL: 858 674 8100 FAX: 858 674 8262 UNITED KINGDOM (Northern Europe) 1 & 2 Huxley Road The Surrey Research Park Guildford, Surrey GU2 5RE United Kingdom TEL: 44 1483 401700 FAX: 44 1483 401701 FRANCE (Southern Europe) Zone Industrielle F-39270 Orgelet France TEL: 33 3 84 35 04 04 FAX: 33 3 84 25 46 41 SINGAPORE (Southern Asia) 150 Kampong Ampat #07-01/02 KA Centre Singapore 368324 TEL: 65 287 8998 FAX:65 280 0080 TAIWAN, R.O.C. (Northern Asia) 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 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. (c)2000, Pulse Engineering, Inc. PRELIMINARY C200.P (2/00) W A. These transformers have been optimized for use in the upstream interface for cable modems and set-top box applications. The 5-80 MHz frequency range is well-suited for MCNS-DOCSIS, Euro-DOCSIS/Davic/DVB product development. B. Bandwidth specifications are for a 75 system. DISTRIBUTOR |
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