SAW Components Data Sheet B3639 SAW Components B3639 Low-Loss Filter 280,0 MHz Data Sheet Ceramic package QCC8C Features ● ● ● ● Low-loss IF filter for wireless LAN Channel selection according to IEEE 802.11 Very small group delay ripple Very small ceramic SMD package Terminals ● Gold plated Dimensions in mm, approx. weight 0,1 g Pin configuration 2 6 3 7 1,5 4,8 Input Output Input ground Output ground Ground Case – ground Type Ordering code B3639 B39281-B3639-U310 Marking and Package according to C61157-A7-A56 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature range DC voltage Source power TA Tstg VDC Ps – 30/+ 85 – 40/+ 85 0 10 2 ˚C ˚C V dBm Apr 04, 2001 Packing according to F61074-V8070-Z000 SAW Components B3639 Low-Loss Filter 280,0 MHz Data Sheet Characteristics TA = 25 ˚C Zin = 278 Ω || 7,5 pF Zout = 178 Ω || 6,8 pF Reference temperature: Input impedance: Output impedance: min. typ. max. — Nominal frequency fN — 280,0 Insertion attenuation at fN (including matching network) αN — 7,0 B3,0dB 18,5 19,8 — — — 55 80 ns 45 40 30 27 36 40 55 45 34 30 40 43 — — — — — — dB dB dB dB dB dB — –87 — ppm/K Passband width αrel ≤ 3,0 dB 8,5 — MHz dB MHz ∆α Amplitude ripple (p-p) 271,0 ... 289,0 MHz Group delay ripple (p-p) 271,0 ... 289,0 MHz 3,0 dB ∆τ Relative attenuation (relative to αN) fN − 100 MHz ... fN − 40 MHz fN − 40 MHz ... fN − 22 MHz fN − 22 MHz ... fN − 16 MHz fN + 16 MHz ... fN + 22 MHz fN + 22 MHz ... fN + 60 MHz fN + 60 MHz ... fN + 100 MHz αrel Temperature coefficient of frequency TCf 3 Apr 04, 2001 SAW Components B3639 Low-Loss Filter 280,0 MHz Data Sheet Characteristics TA = -30 ... +70 ˚C Zin = 278 Ω || 7,5 pF Zout = 178 Ω || 6,8 pF Reference temperature: Input impedance: Output impedance: min. typ. max. Nominal frequency fN — 280,0 — Insertion attenuation at fN (including matching network) αN — 7,0 Passband width αrel ≤ 3,0 dB B3,0dB 18,5 19,8 Amplitude ripple (p-p) ∆α — — — 55 80 ns 45 40 27 27 36 40 55 45 34 30 40 43 — — — — — — dB dB dB dB dB dB — –87 — ppm/K 271,5 ... 288,5 MHz Group delay ripple (p-p) 271,5 ... 288,5 MHz 8,5 — 3,5 MHz dB MHz dB ∆τ Relative attenuation (relative to αN) fN − 100 MHz ... fN − 40 MHz fN − 40 MHz ... fN − 22 MHz fN − 22 MHz ... fN − 16 MHz fN + 16 MHz ... fN + 22 MHz fN + 22 MHz ... fN + 60 MHz fN + 60 MHz ... fN + 100 MHz αrel Temperature coefficient of frequency TCf 4 Apr 04, 2001 SAW Components B3639 Low-Loss Filter 280,0 MHz Data Sheet Matching network 1 for improved TTS suppression and IL=7,0 dB: Cp1 = 4,7 pF Ls2 = 33 nH Lp3 = 120 nH Ls4 = 56 nH Matching network 2 for small IL=5,4 dB: Ls1 = 47 nH Lp2 =120 nH Lp3 =120 nH Ls4 = 56 nH Matching network 3 for optimum TTS suppression and IL=9,0 dB: Cp1 = 3,3 pF Ls2 = 10 nH Lp3 =120 nH Ls4 = 56 nH 5 Apr 04, 2001 SAW Components B3639 Low-Loss Filter 280,0 MHz Data Sheet Transfer function (matching network 1): Transfer function (passband; matching network 1): 6 Apr 04, 2001 SAW Components B3639 Low-Loss Filter 280,0 MHz Data Sheet Transfer function (matching network 2): Transfer function (pass band; matching network 2): 7 Apr 04, 2001 SAW Components B3639 Low-Loss Filter 280,0 MHz Data Sheet Transfer function (matching network 3): Transfer function (pass band; matching network 3): 8 Apr 04, 2001 SAW Components B3639 Low-Loss Filter 280,0 MHz Data Sheet Published by EPCOS AG Surface Acoustic Wave Components Division, SAW MC IS P.O. Box 80 17 09, D-81617 München EPCOS AG 1999. All Rights Reserved. As far as patents or other rights of third parties are concerned, liability is only assumed for components per se, not for applications, processes and circuits implemented within components or assemblies. The information describes the type of component and shall not be considered as assured characteristics. Terms of delivery and rights to change design reserved. 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. 9 Apr 04, 2001