IF Filters for Narrowband Cellular Phones Series/Type: B4871 The following products presented in this data sheet are being withdrawn. Ordering Code B39141B4871H310 Substitute Product Date of Withdrawal 14.06.2006 Deadline Last Orders 31.08.2006 Last Shipments 30.09.2006 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 B4871 135,54 MHz Low Loss Filter for Mobile Communication Data Sheet SMD ceramic package QCC12C 2,54 12 1,0 3 111 000 00 11 000 111 00 11 000 111 00 11 000 000 111 00 11 111 00 11 00 11 000 111 11 00 00 11 000 111 00 11 000 11 111 00 00 11 00 11 9 8 bottom view 6 5 4 2 000 111 00 11 00 11 000 111 00 00 000 11 111 00 11 11 00 00 11 111 000 11 111 000 00 11 00 11 000 111 00 11 000 111 000 111 111 00 11 000 000 111 00 11 2,54 1 11 Low-loss IF filter for mobile telephone Channel selection in AMPS / D-AMPS systems Filter surface passivated Balanced or unbalanced operation possible Package for Surface Mounted Technology (SMT) 10 ■ ■ ■ ■ ■ 1,4 Features 7 0,6 1,48 Terminals 5,0 ■ Ni, gold plated 000 11 111 00 11 000 111 000 111 00 000 111 000 111 00 11 000 111 000 111 00 000 111 000 111 11 00 11 000 111 side view top view 7,0 Dimensions in mm, approx. weight 0,25 g Pin configuration 12 6 10 4 3,9 1,2,7,8 Type B4871 Input Output Balanced input or input ground Balanced output or output ground Case ground Not connected Ordering code Marking and Package Packing B39141-B4871-H310 according to C61157-A7-A95 according to F61074-V8170-Z000 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature range DC voltage Source power T Tstg VDC Ps – 30/+ 85 – 40/+ 85 13 10 2 ˚C ˚C V dBm Jan 03, 2003 SAW Components B4871 135,54MHz Low Loss Filter for Mobile Communication Data Sheet Characteristics T = -30˚C ... 85˚C ZS = 850 Ω || - 0,8 pF ZL = 850 Ω || - 0,8 pF Operating temperature range: Terminating source impedance: Terminating load impedance: fN Nominal frequency 3 dB Bandwidth typ. max. — 135,54 — MHz — kHz — Minimum insertion attenuation (including losses in the matching network) αmin Amplitude ripple (p-p) fN – 10,0 kHz ... fN + fN – 13,0 kHz ... fN + ∆α Group delay ripple (p-p) fN – 13,0 kHz ... fN + min. 10,0 kHz 13,0 kHz 58 — 4,2 5,3 dB — — 0,2 0,5 1,5 3,0 dB dB — 2,0 10,0 µs ∆τ 13,0 kHz Relative attenuation (relative to αmin) fN ± 60,0 kHz ... fN ± 120,0 kHz fN ± 120,0 kHz ... fN ± 240,0 kHz fN ± 240,0 kHz ... fN ± 1000,0 kHz fN ± 330,0 kHz fN ± 660,0 kHz αrel Impedance within the passband Input: ZIN = RIN || CIN Output: ZOUT = ROUT || COUT 14 40 50 55 55 24 50 56 65 70 — — — — — dB dB dB dB dB — — Ω || pF — 850 || 0,8 850 || 0,8 — Ω || pF Temperature coefficient of frequency 1) TCf — – 0,034 — ppm/K2 Turnover temperature T0 — 25 — ˚C 1) Temperature dependance of fc: fc(T) = fc(T0)(1 + TCf(T – T0)2) 3 Jan 03, 2003 SAW Components B4871 135,54 MHz Low Loss Filter for Mobile Communication Data Sheet Test matching networks to 50 Ω (element values depend on pcb layout) a) Unbalanced - unbalanced matching network Input: Pin 12 Output: Pin 6 Ls1 = 220 nH Cp2 = 3,3 pF Cp3 = 3,3 pF Ls4 = 220 nH b) Balanced - balanced matching network Input: Pins 12 and 10 Output: Pins 6 and 4 Cs1 = 15 pF Cs2 = 12 pF Lp1 = 150 nH Lp2 = 150 nH Cs3 = 15 pF Cs4 = 12pF Note : The balanced - balanced network is realized using TOKO 1:1 baluns B5FL. The insertion attenuation of each balun is 0,6 dB at fN. The loss of the baluns is not included in the specified filter insertion attenuation. S-Parameters of the TOKO 1:1 balun B5FL are available on request. The level of ultimate suppression may be limited by electromagnetic feedthrough depending on the layout of the pcb and the arrangement of the matching components. The above mentioned characteristics can be realized either in balanced or in unbalanced mode of operation. For more details see our application note PCB Layout for Highly Selective IF Filters. 4 Jan 03, 2003 SAW Components B4871 135,54MHz Low Loss Filter for Mobile Communication Data Sheet Normalized transfer function passband (measured single ended - single ended) Normalized transfer function wideband (measured single ended - single ended) 5 Jan 03, 2003 SAW Components B4871 135,54MHz Low Loss Filter for Mobile Communication Data Sheet Normalized transfer function passband (measured balanced - balanced) Normalized transfer function wideband (measured balanced - balanced) 6 Jan 03, 2003 SAW Components B4871 135,54MHz Low Loss Filter for Mobile Communication Data Sheet Published by EPCOS AG Surface Acoustic Wave Components Division, SAW MC WT P.O. Box 80 17 09, D-81617 München EPCOS AG 2002. All Rights Reserved. Reproduction, publication and dissemination of this brochure and the information contained therein without EPCOS’ prior express consent is prohibited. The information contained in this brochure describes the type of component and shall not be considered as guaranteed characteristics. 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. 7 Jan 03, 2003