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| DW9249 DW9249 112.32MHz SAW IF Filter Preliminary Information DS3811 - 3.4 October 11995 The DW9249 112.32MHz SAW I.F. filter has been specifically developed for the Digital European Cordless Telephone (DECT) market. By using a centre frequency of 112.32MHz, the DW9249 overcomes the potential problems of 6th and 8th harmonic interference often associated with filters centred at 110.592MHz. The filter offers excellent temperature stability, (ST-Quartz substrate) plus low Group Delay Ripple (100ns max.) and is available in the latest, low profile ceramic surface mount package technology. FEATURES s Extremely Low Group Delay Ripple s Wide Operating Temperature s High Co-channel rejection s High Adjacent Channel Rejection s Highly Reproduceable Impedance Characteristics s Balanced or Unbalanced Drive s Low Profile Leadless Ceramic Surface Mount Package Suitable for Automated Assembly ABSOLUTE MAXIMUM RATINGS DC Voltage Input Power Max. VDC PIN 0V 10dBm NOMINAL IMPEDANCE Input: Output: 1.1k // 9.25pF 1.2k // 12pF 50 TEST BOARD COMPONENTS Input: Output: Series Ind. 180nH, Shunt Cap. 60.7pF Series Ind. 100nH Components: Coilcraft 1008CS Inductors : Murata 0805 Capacitors ORDERING INFORMATION DW9249 REFERENCE APPLICATION NOTE: DW9249 - SAW Bandpass Filter for D.E.C.T. 1 DW9249 0dB -10dB -20dB -30dB -40dB -50dB -60dB Typical Response of DW9249 ELECTRICAL CHARACTERISTICS @ 25C Parameter Centre Frequency (FO) -3dB Bandwidth Group Delay Ripple (FO576kHZ) Insertion Loss Stopband Attenuation: FO 1.152MHz FO 1.728MHz FO 3.556MHz FO 5MHz Amplitude Ripple (pk to pk) Operating Temperature Range 720 80 15 20 40 45 50 0.4 Typ 112.320 576 100 (Max) 16 (Max) >15 >30 >40 >45 0.6 -20 to +85 Units MHz KHz ns dB dB dB dB dB dB C GPS reserves the right to modify these `datasheets' when necessary to provide optimum performance and cost. 2 DW9249 3 DW9249 PACKAGE DETAILS Dimensions are shown thus: mm (in). For further package information, please contact your local Customer Service Centre. HEADQUARTERS OPERATIONS MITEL SEMICONDUCTOR Cheney Manor, Swindon, Wiltshire SN2 2QW, United Kingdom. Tel: (01793) 518000 Fax: (01793) 518411 MITEL SEMICONDUCTOR 1500 Green Hills Road, Scotts Valley, California 95066-4922 United States of America. Tel (408) 438 2900 Fax: (408) 438 5576/6231 Internet: http://www.gpsemi.com CUSTOMER SERVICE CENTRES q FRANCE & BENELUX Les Ulis Cedex Tel: (1) 69 18 90 00 Fax : (1) 64 46 06 07 q GERMANY Munich Tel: (089) 419508-20 Fax : (089) 419508-55 q ITALY Milan Tel: (02) 6607151 Fax: (02) 66040993 q JAPAN Tokyo Tel: (03) 5276-5501 Fax: (03) 5276-5510 q KOREA Seoul Tel: (2) 5668141 Fax: (2) 5697933 q NORTH AMERICA Scotts Valley, USA Tel: (408) 438 2900 Fax: (408) 438 5576/6231 q SOUTH EAST ASIA Singapore Tel:(65) 3827708 Fax: (65) 3828872 q SWEDEN Stockholm Tel: 46 8 702 97 70 Fax: 46 8 640 47 36 q TAIWAN, ROC Taipei Tel: 886 2 25461260 Fax: 886 2 27190260 q UK, EIRE, DENMARK, FINLAND & NORWAY Swindon Tel: (01793) 726666 Fax : (01793) 518582 These are supported by Agents and Distributors in major countries world-wide. (c) Mitel Corporation 1998 Publication No. DS3811 Issue No. 3.4 October TECHNICAL DOCUMENTATION - NOT FOR RESALE. PRINTED IN UNITED KINGDOM This publication is issued to provide information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. The Company reserves the right to alter without prior notice the specification, design or price of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to the Company's conditions of sale, which are available on request. All brand names and product names used in this publication are trademarks, registered trademarks or trade names of their respective owners. 4 |
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