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| SAW Components Data Sheet B4812 SAW Components Low-Loss Filter Data Sheet B4812 246,01 MHz Ceramic package QCC10B Features q q q q Low-loss IF filter for mobile telephone Channel selection in GSM systems Hermetically sealed ceramic SMD package Balanced and unbalanced operation possible Terminals q Gold-plated Ni Dimensions in mm, approx. weight 0,23 g Pin configuration 4 5 9 10 1, 3, 6, 8 2, 7 Input Input ground or balanced input Output Output ground or balanced output Case - ground Ground Type B4812 Ordering code B39251-B4812-Z710 Marking and Package according to C61157-A7-A49 Packing according to F61074-V8127-Z000 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature range DC voltage Source power T Tstg VDC Ps - 25/+ 85 - 25/+ 85 0 10 C C V dBm 2 Jul 11, 2003 SAW Components Low-Loss Filter Data Sheet Characteristics Reference temperature: Terminating source impedance: Terminating load impedance: B4812 246,01 MHz T = 25 C ZS = 700 Ohm || -2,6 pF ZL = 700 Ohm || -2,6 pF min. typ. 246,01 3,2 max. -- 5,0 MHz dB Nominal frequency Minimum insertion attenuation (including loss in matching coils) Amplitude ripple (p-p) fN - 67,5 kHz ... fN + 67,5 kHz fN - 80,0 kHz ... fN + 80,0 kHz Group delay ripple (p-p) fN - 50,0 kHz ... fN + 50,0 kHz fN - 80,0 kHz ... fN + 80,0 kHz Relative attenuation (relative to min) fN - 25,00 MHz ... fN - 3,00 MHz fN - 3,00 MHz ... fN - 1,60 MHz fN - 1,60 MHz ... fN - 0,60 MHz fN - 0,60 MHz ... fN - 0,40 MHz fN - 0,40 MHz ... fN - 0,20 MHz fN min -- 2,0 -- -- -- -- rel 50 48 38 28 8 8 28 38 48 50 -- -- 0,6 0,7 0,5 1,2 60 60 50 40 14 14 40 50 60 60 700 || 2,6 700 || 2,6 - 0,036 25 2,0 3,0 1,5 3,0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- dB dB s s dB dB dB dB dB dB dB dB dB dB || pF || pF ppm/K2 C fN + 0,20 MHz fN + 0,40 MHz fN + 0,60 MHz fN + 1,60 MHz fN + 3,00 MHz Impedance at fN ... ... ... ... ... fN + 0,40 MHz fN + 0,60 MHz fN + 1,60 MHz fN + 3,00 MHz fN + 25,00 MHz Input: ZIN = RIN || CIN Output: ZOUT = ROUT || COUT Temperature coefficient of frequency 1) Frequency inversion point 1) Temperature TCf T0 -- -- dependence of fc: fc(T) = fc(T0)(1 + TCf(T - T0)2) Test matching network to 50 (element values depend on PCB layout): Cp1 Ls2 Ls3 Cp4 = = = = 1,8 56 56 1,8 pF nH nH pF 3 Jul 11, 2003 SAW Components Low-Loss Filter Data Sheet Transfer function: B4812 246,01 MHz Transfer function (pass band): 4 Jul 11, 2003 SAW Components Low-Loss Filter Data Sheet B4812 246,01 MHz Published by EPCOS AG Surface Acoustic Wave Components Division, SAW MC WT P.O. Box 80 17 09, 81617 Munich, GERMANY (c) EPCOS AG 2003. 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. 5 Jul 11, 2003 |
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