SAW Components Data Sheet B3874 SAW Components B3874 Low-Loss Filter 71,1 MHz Data Sheet Ceramic package DCC18 Features ■ ■ ■ ■ Low-loss IF filter for CDMA base station Temperature stable Ceramic SMD package Unbalanced or balanced operation Terminals ■ Gold plated Dimensions in mm, approx. weight 0,8 g Pin configuration 1 10 6 5 3, 8 2, 4, 7, 9 Input or balanced input Input ground or balanced input Output or balanced output Output ground or balanced output Ground Case ground Type Ordering code B3874 B39710-B3874-U210 Marking and Package according to C61157-A7-A54 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 2 ˚C ˚C V dBm May 06, 2004 Packing according to F61074-V8166-Z000 SAW Components B3874 Low-Loss Filter 71,1 MHz Data Sheet Characteristics Operating temperature range: Terminating source impedance: Terminating load impedance: T = 0 to +85 ˚C ZS = 50 Ω and external matching network ZL = 50 Ω and external matching network min. typ. max. Nominal frequency fN — 71,1 — MHz Minimum insertion attenuation αN — 9,0 11,0 dB 1,24 — MHz 3,75 dB bandwidth αrel ≤ 3,75 dB B3,75dB 1,18 Amplitude ripple (p-p) fN ± 525 kHz ∆α — 0,5 1,0 dB Phase Linearity (rms) fN ± 630 kHz ∆ϕ — 1,3 2,0 deg Absolute group delay fN ± 630 kHz τ — 3,1 Group delay ripple (p-p) fN ± 525 kHz ∆τ — Relative attenuation (relative to αN) 31,0 MHz ... fN − 4900 kHz fN − 4900 kHz ... fN − 900 kHz fN − 900 kHz ... fN − 750 kHz fN + 750 kHz ... fN + 900 kHz fN + 900 kHz ... fN + 4900 kHz fN + 4900 kHz ... 500 MHz Input Return loss Output Return loss µs 320 450 ns 45 26 15 15 26 45 60 29 18 17 29 60 — — — — — — dB dB dB dB dB dB 8 10 11 15 — — dB dB IP3 35 — — dB TCf — –0,036 — ppm/K2 T0 — 35 — ˚C αrel fN ± 525 kHz fN ± 525 kHz 3rd-order intercept point Temperature coefficient of frequency Turnover temperature 1) Temperature — dependance of fc: 1) fc(TA) = fc(T0)(1 + TCf(TA – T0)2) 3 May 06, 2004 SAW Components B3874 Low-Loss Filter 71,1 MHz Data Sheet Normalized frequency response Normalized frequency response (pass band) 4 May 06, 2004 SAW Components B3874 Low-Loss Filter 71,1 MHz Data Sheet Normalized frequency response (wide band) 5 May 06, 2004 SAW Components B3874 Low-Loss Filter 71,1 MHz Data Sheet Matching network to 50 Ω (Element values depend on PCB layout) Ls2 Lp1 Ls5 Lp4 Lp3 Lp1 = 150 nH Lp4 = 470 nH Ls2 = 390 nH Ls5 = 620 nH Lp3 = 330 nH Lp6 = not used 6 May 06, 2004 Lp6 SAW Components B3874 Low-Loss Filter 71,1 MHz Data Sheet Published by EPCOS AG Surface Acoustic Wave Components Division, SAW MC P.O. Box 80 17 09, 81617 Munich, GERMANY 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. 7 May 06, 2004