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| SAW Components Data Sheet B4937 SAW Components Low-Loss Filter for Mobile Communication Data Sheet B4937 109,8 MHz Ceramic package QCC10C Features s s s s s s s Low-loss IF filter for mobile telephone Channel selection in CDMA systems Very small size Low insertion attenuation Balanced and unbalanced operation possible Filter surface passivated Ceramic SMD package Terminals s Gold-plated Ni Dimensions in mm, approx. weight 0,24 g Pin configuration 10 9 5 4 2, 7 1, 3, 6, 8 Input Input ground or balanced input Output Balanced output or output ground Case - ground To be grounded Type B4937 Ordering code B39111-B4937-U910 Marking and Package according to C61157-A7-A73 Packing according to F6104-V8104-Z000 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature range DC voltage Source power T Tstg VDC Ps - 40/+ 85 - 40/+ 85 0 10 C C V dBm 2 May 11, 2000 SAW Components Low-Loss Filter for Mobile Communication Data Sheet Characteristics Operating temperature range: Terminating source impedance: Terminating load impedance: B4937 109,8 MHz T = -35 to +85 C ZS = 1200 || 120 nH ZL = 1000 || 110 nH min. typ. 109,8 8,5 max. -- 10,0 MHz dB Nominal frequency Minimum insertion attenuation (including losses in matching circuit) Amplitude ripple (p-p) fN - 0,3 MHz fN min -- -- ... fN + 0,3 MHz -- 0,4 1,0 dB Phase Linearity (rms) fN - 0,614 MHz ... fN + 0,614 MHz rel -- 1,5 3,0 Relative attenuation (relative to min) fN 0,614 MHz -- 38 40 35 35 35 33 40 38 4,0 42 45 39 38 38 35 45 42 40 38 35 40 5,0 -- -- -- -- -- -- -- -- -- -- -- -- dB dB dB dB dB dB dB dB dB dB dB dB dB fN - 2,05 fN - 1,7 fN - 1,25 fN - 0,9 fN + 0,9 fN + 1,25 fN + 1,7 fN + 2,05 MHz MHz MHz MHz MHz MHz MHz MHz ... ... ... ... fN - 25 MHz fN - 1,7 MHz fN + 0,9 MHz fN + 1,7 MHz fN - 1,7 MHz fN - 0,9 MHz fN + 1,7 MHz fN + 25 MHz 36 33 33 36 Test Matching Network to bal. 200 / unbal. 50 (element values depend on PCB layout) Cs1 = 6,8 pF Cs2 = 6,8 pF Lp3 = 82 nH Cp4 = 2,7 pF Lp5 = 68 nH Cp6 = 1,2 pF Cs7 = 6,8 pF 3 May 11, 2000 SAW Components Low-Loss Filter for Mobile Communication Data Sheet Transfer function (balanced - unbalanced): B4937 109,8 MHz Transfer function (passband): 4 May 11, 2000 SAW Components Low-Loss Filter for Mobile Communication Data Sheet Transfer function (wideband): B4937 109,8 MHz 5 May 11, 2000 SAW Components Low-Loss Filter for Mobile Communication Data Sheet B4937 109,8 MHz Published by EPCOS AG Surface Acoustic Wave Components Division, OFW E MF P.O. Box 80 17 09, D-81617 Munchen (c) 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 May 11, 2000 |
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