SAW Components Data Sheet B4856 SAW Components B4856 148,05 MHz Low Loss Filter for Mobile Communication Data Sheet Ceramic package QCC10B Features ■ ■ ■ ■ ■ 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) Terminals ■ Ni, gold plated Dimensions in mm, approx. weight 0,23 g Pin configuration 4 5 9 10 1,3,6,8 2,7 Type B4856 Balanced input or input ground Input Balanced output or output ground Output Case ground Not connected Ordering code Marking and Package Packing B39151-B4856-Z710 according to C61157-A7-A49 according to 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 Feb 22, 2000 SAW Components B4856 148,05 MHz Low Loss Filter for Mobile Communication Data Sheet Characteristics T = -30˚C ... 80˚C ZS = 400 Ω || 2000 nH ZL = 400 Ω || 2000 nH Operating temperature range: Terminating source impedance: Terminating load impedance: fN Nominal center frequency Filter bandwidth at -3 dB typ. max. — 148,05 — MHz — kHz — Minimum insertion attenuation (including losses in the matching network) αmin Amplitude ripple (p-p) fN - 11 kHz .. fN + 11 kHz ∆α Group delay ripple (p-p) fN – 10,0 kHz ... fN + ∆τ 10,0 kHz Relative attenuation (relative to αmin) fN - 1000kHz fN - 900 kHz fN - 900 kHz fN - 200 kHz fN - 120 kHz fN - 65 kHz fN + 60 kHz fN + 65 kHz fN + 120 kHz fN + 200 kHz fN + 900kHz min. ... fN - 900 kHz ... ... ... ... ... ... ... ... ... fN - 200 kHz fN - 120 kHz fN - 65 kHz fN - 60 kHz fN + 65 kHz fN + 120 kHz fN + 200 kHz fN + 900 kHz fN + 1000 kHz 60 — 4,6 5,0 dB — 0,4 2,0 dB — 0,8 7,5 µs αrel Impedance within the passband Input: ZIN = RIN || CIN Output: ZOUT = ROUT || COUT 65 68 50 40 15 12 12 15 40 50 63 75 75 65 49 29 25 25 29 49 65 70 — — — — — — — — — — — dB dB dB dB dB dB dB dB dB dB dB — — Ω || pF — 400 || 0,6 400 || 0,6 — Ω || pF Temperature coefficient of frequency 1) TCf — – 0,036 — ppm/K2 Turnover temperature T0 — 25 — ˚C 1) Temperature dependance of fc: fc(T) = fc(T0)(1 + TCf(T – T0)2) 3 Feb 22, 2000 SAW Components B4856 148,05 MHz Low Loss Filter for Mobile Communication Data Sheet Recommended pin configurations / test matching networks: a) single-ended 50Ω / single-ended 50Ω LS1 = 150 nH CP2 = 3,9 pF CP3 = 3,9 pF LS4 = 150 nH Note : 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 S+M’s application note PCB Layout for Highly Selective IF Filters. 4 Feb 22, 2000 SAW Components B4856 148,05 MHz Low Loss Filter for Mobile Communication Data Sheet Normalized transfer function (measured single ended / single ended) 5 Feb 22, 2000 SAW Components B4856 148,05 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 Feb 22, 2000