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| SAW Components Data Sheet B3850 SAW Components Low-Loss Filter Data Sheet B3850 125,00 MHz Ceramic package DCC12A Features s s s s s 7,62 1,0 1 2 3 4 5 Low-loss IF filter for GSM EDGE base station Usable bandwidth 400 kHz Very low group delay ripple Temperature stable Ceramic SMD package 1,7 2,3 bottom view 10 9 8 7 6 Terminals s Gold plated 1,6 3,81 side view 6,5 top view 13,3 Dimensions in mm, approx. weight 0,4 g Pin configuration 10 1 5 6 3, 8 2, 4, 7, 9 Input Input ground Output Output ground Ground Case ground Type B3850 Ordering code B39121-B3850-H510 Marking and Package according to C61157-A7-A94 Packing according to F61074-V8131-Z000 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature range DC voltage Source power T Tstg VDC Ps -40 / +85 -40 / +85 1,2 10 2 C C V dBm Jul 15, 2002 SAW Components Low-Loss Filter Data Sheet Characteristics Operating temperature range: Terminating source impedance: Terminating load impedance: T = -10 .. 85 C ZS = 50 and matching network ZL = 50 and matching network min. Nominal frequency Minimum insertion attenuation Pass bandwidth rel 1,0 dB rel 3,0 dB Amplitude ripple (peak to adjacent valley) fN 200 kHz Amplitude variation (p-p) typ. 125,0 6,2 max. -- 7,0 B3850 125,00 MHz fN min -- -- MHz dB B1dB B3dB 400 -- 560 840 -- -- kHz kHz -- 0,1 -- dB fN 200 kHz Absolute group delay @ fN Group delay ripple (p-p) -- 0,6 1,0 dB 0,7 1,1 1,7 s fN 200 kHz Relative attenuation (relative to min) fN 0,4 MHz ... fN 0,6 MHz fN 0,6 MHz ... fN 1,2 MHz fN 1,2 MHz ... fN 1,8 MHz fN 1,8 MHz ... fN 3,4 MHz fN 3,4 MHz ... fN 6,5 MHz fN 6,5 MHz ... fN 9,5 MHz fN 9,5 MHz ... fN 17,0 MHz 10,0 MHz ... fN - 17,0 MHz fN + 17,0 MHz ... 450,0 MHz1) VSWR (Input and output in pass band) rel -- 70 120 ns 0 8 20 25 34 40 43 55 55 -- 2 10 30 40 50 50 60 60 60 2,0 -- -- -- -- -- -- -- -- -- 2,3 dB dB dB dB dB dB dB dB dB 3 Jul 15, 2002 SAW Components Low-Loss Filter Data Sheet min. Temperature coefficient of frequency Turnover temperature 2) B3850 125,00 MHz typ. - 0,036 50 max. -- -- ppm/K2 C TCf T0 -- -- 1) 2) Narrowband responses (typ. 40 dB) at 202 MHz, 228 MHz, 250 MHz, and at 375 MHz Temperature dependance of fc: fc(TA) = fc(T0)(1 + TCf(TA - T0)2) Matching network to 50 (Element values depend upon PCB layout) Lp1 = 33 nH Ls2 = 68 nH Ls3 = 56 nH Lp4 = 27 nH 4 Jul 15, 2002 SAW Components Low-Loss Filter Data Sheet Normalized frequency response B3850 125,00 MHz Normalized frequency response (pass band) 5 Jul 15, 2002 SAW Components Low-Loss Filter Data Sheet B3850 125,00 MHz Published by EPCOS AG Surface Acoustic Wave Components Division, SAW MC IS P.O. Box 80 17 09, 81617 Munich, GERMANY (c) EPCOS AG 2002. Reproduction, publication and dissemination of this brochure and the information contained therein without EPCOS' prior express consent is prohibited. Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers' Association), unless otherwise agreed. This brochure replaces the previous edition. For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or the international Representatives. Due to technical requirements components may contain dangerous substances. For information on the type in question please also contact one of our Sales Offices. 6 Jul 15, 2002 |
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