SAW Components Data Sheet B4870 SAW Components B4870 112,32 MHz Low Loss Filter for Mobile Communication Data Sheet Ceramic package QCC12B Features ■ ■ ■ ■ ■ ■ Low-loss IF filter for mobile telephone Channel selection in AMPS/D-AMPS systems Filter surface passivated Low group delay variation Balanced or unbalanced operation possible Package for Surface Mounted Technology (SMT) Terminals Dimesions in mm, approx. weight 0,23 g Pin configuration 12 6 10 4 3,9 1,2,7,8 Type B4870 Input Output Balanced input or input ground Balanced output or output ground To be grounded Not connected Ordering code B39111-B4870-Z910 Marking and Package Packing according to according to C61157-A7-A49 F61064-V8035-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 Sep 20, 2000 SAW Components B4870 112,32 MHz Low Loss Filter for Mobile Communication Data Sheet Characteristics ZS 1020 Ω || -1,2 pF ZL 1000 Ω || -1,1 pF T = -30˚C ... +85˚C Terminating source impedance: Terminating load impedance: Operating temperature range: min. typ. max. — Nominal center frequency fN — 112,32 Minimum insertion attenuation including losses in the matching network αmin — 4,0 ± 15 3 dB bandwidth (from fN) Group delay ripple (p-p) fN – 15,0 kHz ... fN + kHz — 1,5 6,5 µs — 13 43 45 45 45 1,0 22 46 60 60 60 3,0 — — — — — dB dB dB dB dB dB — ppm/K2 — ˚C typ. 4,0 max. 5,1 dB 1,5 5,6 µs αrel Temperature coefficient of frequency 1) TCf — Turnover temperature T0 — T Operating temperature : – 0,03 24 = room temperature αmin Minimum insertion attenuation including losses in the matching network Group delay ripple (p-p) fN – 15,0 kHz ... fN + 15,0 kHz min. — ∆τ — 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 ± 330,0 kHz dependance of fc: — dB ∆τ 15,0 kHz Relative attenuation (relative to αmin) fN – 15,0 kHz ... fN + 15,0 kHz fN ± 60,0 kHz ... fN ± 120,0 kHz fN ± 120,0 kHz ... fN ± 240,0 kHz fN ± 240,0 kHz ... fN ± 330,0 kHz fN ± 330,0 kHz ... fN ± 480,0 kHz fN ± 480,0 kHz ... fN ± 660,0 kHz 1) Temperature — 5,5 MHz αrel 18 46 65 fc(T) = fc(T0)(1 + TCf(T – T0)2) 3 Sep 20, 2000 25 50 60 — — — dB dB dB SAW Components B4870 112,32 MHz Low Loss Filter for Mobile Communication Data Sheet Recommended pin configuration / test matching network to 50 Ω: single-ended / single-ended Input: Pin 12 Output: Pin 6 Ls1 = 330 nH Cp2 = 2,7 pF Cp3 = 2,7 pF Ls4 = 330 nH balanced / balanced Input: Pin 12 Output: Pin 6 Cs1 = 12 pF Cs2 = 12 pF Lp1 = 270 nH Lp2 = 270 nH Cs3 = 12 pF Cs4 = 12 pF Note : The balanced network is realized using TOKO 1:1 balun B5FL. The insertion attenuation of a balun is 0,6 dB at 112,32 MHz. The loss of the balun is not included in the specified filter insertion attenuation. 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. To achieve the best performance it is recommended to drive at least one side of the filter balanced. For more details see EPCOS’s application note PCB Layout for Highly Selective IF Filters. 4 Sep 20, 2000 SAW Components B4870 112,32 MHz Low Loss Filter for Mobile Communication Data Sheet Transfer function pass band (normalized, measured single-ended / single-ended) Transfer function wide band (normalized, measurement single-ended / single-ended) 5 Sep 20, 2000 SAW Components B4870 112,32 MHz Low Loss Filter for Mobile Communication Data Sheet Published by EPCOS AG Surface Acoustic Wave Components Division, OFW E MF 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. 6 Sep 20, 2000