1/6 www.dynexsemi.com DW9276 description the DW9276 is a 71mhz if saw filter which has been specifically designed for cellular radio architectures using the highly integrated ?ceptre? hardware platform for gsm from at&t microelectronics. based on quartz for excellent temperature stability, the DW9276 provides very high channel selectivity, low group delay ripple and insertion loss. packaged in a surface mount, low profile leadless chip carrier, the DW9276 is ideally suited to high volume automatic assembly systems. absolute maximum ratings dc voltage vdc 0v input power max pin 10dbm nominal impedance input: 648 ? // 25pf output: 1177 ? // 19pf 50 ? test board components input: shunt cap 6.8pf, series ind 220nh, shunt cap 80pf output: series ind 300nh, shunt cap 80pf components: coilcraft 1008cs inductors: murata 0805 capacitors odering information for balanced order DW9276b for unbalanced order DW9276u input gnd case gnd case gnd case output return input return gnd case gnd case gnd case output 5 4 3 2 1 DW9276 (u/b) 6 7 8 9 10 lcs10/1 figure 1: pin connections DW9276 71mhz if saw filter replaces january 2000 version, ds4087-3.0 ds4087-3.1 july 2002
2/6 www.dynexsemi.com DW9276 electrical characteristics @ 25 c parameter min. typ. max. units centre frequency (fo) - 71.0 - mhz 3db bandwidth 85 160 - khz insertion loss - 7.0 8.0 db group delay ripple - 250 400 ns amplitude ripple* - 0.2 0.5 db stopband rejection: fo 400 - 600khz 20 25 - db fo 600 - 1600khz 24 26 - db fo 1600 - 3000khz 30 40 - db fo > 3000khz 40 47 - db operating temperature -10 - +55 c temperature delta -8.5 - - khz *adjacent minima to maxima in 3db bandwidth. figure 2: amplitude characteristics
3/6 www.dynexsemi.com DW9276 figure 3: group delay ripple characteristics
4/6 www.dynexsemi.com DW9276 figure 4: impedance characteristics
5/6 www.dynexsemi.com DW9276 package details dimensions are shown thus: mm (in). do not scale. for further package information, please contact customer services. 10-pad leadless chip carrier (slam) - lcs10/1 notes 1. controlling dimensions are millimetres. 2. this package outline diagram is for guidance only. please contact the dynex semiconductor customer service centre for further information. 5 4 3 2 1 6 7 8 9 10 15 34/15 66 (0 60/0 62) 7 80/8 20 (0 31/0 32) 15 70/16 10 (0 62/0 63) 1 60/1 80 (0 06/0 07) 0 56/0 72 (0 022/0 028) 1 02 (0 040) typ. 3 40 (0 134) typ. 1 905 (0 075) 7 62 (0 300)
www.dynexsemi.com customer service tel: +44 (0)1522 502753 / 502901. fax: +44 (0)1522 500020 sales office tel: +44 (0)1522 50 27 24 . fax: +44 (0)1522 502777 these offices are supported by representatives and distributors in many countries world-wide. ?dynex semiconductor 2002 technical documentation ?not for resale. produced in united kingdom headquarters operations dynex semiconductor ltd doddington road, lincoln. lincolnshire. ln6 3lf. united kingdom. tel: +44-(0)1522-500500 fax: +44-(0)1522-500550 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. http://www.dynexsemi.com e-mail: space_comms@dynexsemi.com datasheet annotations: dynex semiconductor annotate datasheets in the top right hard corner of the front page, to indicate product status. the annotations are as follows:- target information: this is the most tentative form of information and represents a very preliminary specification. no actual design work on the product has been started. preliminary information: the product is in design and development. the datasheet represents the product as it is understood but details may change. advance information: the product design is complete and final characterisation for volume production is well in hand. no annotation: the product parameters are fixed and the product is available to datasheet specification.
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