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| IF Filters for CDMA Cellular Phones The following products presented in this data sheet are being withdrawn. Ordering Code B39131B4957H710 Substitute Product Date of Withdrawal 2006-12-01 Deadline Last Orders 2007-02-28 Last Shipments 2007-05-31 For further information please contact your nearest EPCOS sales office, which will also support you in selecting a suitable substitute. The addresses of our worldwide sales network are presented at www.epcos.com/sales. SAW Components Data Sheet B4957 SAW Components Low-Loss Filter for Mobile Communication Data Sheet Features s s s s s s B4957 128,1 MHz SMD package QCC10E 1,0 2,54 3 2 1 Terminals s Gold plated 1,5 side view 8,7 4,6 1,5 top view IF filter for mobile telephone Channel selection in CDMA systems High rejection, small size Low insertion attenuation, low amplitude ripple Filter surface passivated Package for Surface Mounted Technology (SMT) 1,0 6 5 7 2,54 8 0,75 1,2 bottom view 9 4 Dimensions in mm, approx. weight 0,23 g Pin configuration 9, 10 4 5 2, 7 1, 3, 6, 8 Balanced Output Input or Input Ground Input Ground Case ground Type B4957 Ordering code B39131-B4957-H710 Marking and Package according to C61157-A7-A127 Packing according to F61074-V8192-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 5 10 C C V dBm 2 Mar 02, 2004 10 SAW Components Low-Loss Filter for Mobile Communication Data Sheet Operating temperature range: Terminating source impedance: Terminating load impedance: B4957 128,1 MHz T = -30C ... +85 C ZS = 1370 || 170 nH ZL = 760 || 119 nH min. typ. 128,1 9,2 max. -- 10,5 MHz dB Nominal frequency Minimum insertion attenuation (including loss in matching network without loss in balun) fN min -- -- Amplitude ripple fN - 0,3 MHz ... fN + 0,3 MHz -- 0,6 1,0 dB Phase linearity (rms deviation) fN - 0,615MHz ... fN + 0,615 MHz Relative attenuation (relative to min) fN 0,615MHz 10,0 MHz fN - 5,0 MHz fN - 2,05 MHz fN - 1,7 MHz fN - 1,25 MHz fN - 0,9 MHz fN + 0,9 MHz fN + 1,25 MHz fN + 1,7 MHz fN + 2,05 MHz fN + 0,9 MHz fN + 5,0 MHz ... ... rel -- 1,6 3,0 -- MHz MHz 451) 37 37 37 37 37 37 37 37 37 37 452) 60 48 4,0 48 39 49 44 52 43 40 53 44 54 40 48 75 50 4,5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- dB dB dB dB dB dB dB dB dB dB dB dB dB dB dB fN - 5,0 fN - 0,9 ... ... fN + 5,0 MHz fN + 70,0 MHz 173,715 MHz 208,715 MHz 172,485 MHz ... 207,485 MHz ... 1) exception: 122,1 MHz +/- 200 kHz 2) exception: 135,2 MHz +/- 300 kHz 3 Mar 02, 2004 SAW Components Low-Loss Filter for Mobile Communication Data Sheet Transfer function: passband, single ended (pin 5) - balanced (pins 9,10) B4957 128,1 MHz 4 Mar 02, 2004 SAW Components Low-Loss Filter for Mobile Communication Data Sheet Transfer function: wide band, single ended (pin 5) - balanced (pins 9,10) B4957 128,1 MHz Test matching network to 50 (Element values depend on pcb layout. Input is at the right hand side) Cs1 = 5,6 pF Cs2 = 6,8 pF Lp3 = 82 nH || 5,6 pF Lp5 = 68 nH || 2,2 pF Cs7 = 6,8 pF 5 Mar 02, 2004 SAW Components Low-Loss Filter for Mobile Communication Data Sheet B4957 128,1 MHz Published by EPCOS AG Corporate Communications, P.O. Box 80 17 09, 81617 Munich, GERMANY v ++49 89 636 09, FAX (0 89) 636-2 26 89 (c) EPCOS AG 2004. 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 Mar 02, 2004 |
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