Datasheet DW9268 Datasheet (MITEL)

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The DW9268 has been designed specifically for the Digital
Cordless Personal Communications market as an IF filter with
a centre frequency of 240.192MHz. The filter utilises GPS's
low loss (7dB typical), Transversal filter technology based on a
Quartz substrate for excellent temperature stability.

A 3dB passband of 1.3MHz (typical) is maintained whilst
providing rejection to adjacent and alternate interferers
compliant to the DECT Common Interface specification Part 2

- The Physical Layer. The device also exhibits excellent close­in and ultimate rejection, which combined with a Group Delay
Ripple of 200ns maximum makes the DW9268 and ideal IF
filter for Digital Cordless Personal Communications systems.

The device is packaged in a surface mount, leadless
ceramic chip carrier, suited to high volume automated
assembly systems.

DW9268

DW9268

240.192MHz IF SAW Filter

Advance Information

DS4025 - 1.4 October 1995

FEATURES

■ 240.192MHz Centre Frequency (fo)

■ Low Insertion Loss (8dB maximum)

■ 3dB Passband 1.3MHz (typical)

■ Quartz Temperature Stability

■ Low Profile Ceramic LCC Package

ABSOLUTE MAXIMUM RATINGS

DC Voltage VDC 0V
Input Power Max. PIN 10dBm

NOMINAL IMPEDANCE

Input: 500Ω // 16pF
Output: 625Ω // 14pF

50Ω TEST BOARD COMPONENTS

Input: Shunt Cap. 45pF, Series Ind. 47nH
Output: Series Ind. 47nH, Shunt Cap. 34pF

Components: Coilcraft 1008CS Inductors : Murata 0805 Capacitors

ORDERING INFORMATION

DW9268

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DW9268

ELECTRICAL CHARACTERISTICS @ 25°C

Parameter Min Typ Max Units

Centre Frequency - 240.192 - MHz
3dB Bandwidth 1260 1300 1340 kHz
Insertion Loss - 7 8 dB
Amplitude Ripple - 0.2 1 dB
Group Delay Ripple - 100 200 ns
Stopband Rejection

fo ± 1.152 MHz 10 12 - dB
fo ± 1.728 MHz 30 32 - dB
fo ± 2.880 MHz 40 50 - dB
fo ± 5.0 MHz 50 55 - dB

Operating Temperature Range -20 - +80 °C

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PLOT

DW9268

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DW9268

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: [phone]
Fax: [phone]

MITEL SEMICONDUCTOR

1500 Green Hills Road,
Scotts Valley, California 95066-4922
United States of America.
Tel [phone]
Fax: [phone]

Internet: http://www.gpsemi.com

CUSTOMER SERVICE CENTRES

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FRANCE & BENELUX Les Ulis Cedex Tel: [phone] Fax : [phone]

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GERMANY Munich Tel: [phone] Fax : [phone]

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ITALY Milan Tel: [phone] Fax: [phone]

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JAPAN Tokyo Tel: [phone] Fax: [phone]

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KOREA Seoul Tel: [phone] Fax: [phone]

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NORTH AMERICA Scotts Valley, USA Tel: [phone] Fax: [phone]

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SOUTH EAST ASIA Singapore Tel:[phone] Fax: [phone]

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SWEDEN Stockholm Tel: [phone] Fax: [phone]

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TAIWAN, ROC Taipei Tel: [phone] Fax: [phone]

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UK, EIRE, DENMARK, FINLAND & NORWAY

Swindon Tel: [phone] Fax : [phone]
These are supported by Agents and Distributors in major countries world-wide.
© Mitel Corporation 1998 Publication No. DS4025 Issue No. 1.4 October 1995
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.

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