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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 close-
in 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.
FEATURES
s 240.192MHz Centre Frequency (fo)
s Low Insertion Loss (8dB maximum)
s 3dB Passband 1.3MHz (typical)
s Quartz Temperature Stability
s Low Profile Ceramic LCC Package
ABSOLUTE MAXIMUM RATINGS
DC Voltage
VDC 0V
Input Power Max. PIN 10dBm
NOMINAL IMPEDANCE
Input:
Output:
500// 16pF
625// 14pF
50TEST BOARD COMPONENTS
Input:
Output:
Shunt Cap. 45pF, Series Ind. 47nH
Series Ind. 47nH, Shunt Cap. 34pF
Components: Coilcraft 1008CS Inductors : Murata 0805 Capacitors
ORDERING INFORMATION
DW9268
DWD9W2926688
240.192MHz IF SAW Filter
Advance Information
DS4025 - 1.4 October 1995
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DW9268
ELECTRICAL CHARACTERISTICS @ 25°C
Parameter
Min Typ Max
Centre Frequency
3dB Bandwidth
Insertion Loss
Amplitude Ripple
Group Delay Ripple
Stopband Rejection
fo ± 1.152 MHz
fo ± 1.728 MHz
fo ± 2.880 MHz
fo ± 5.0 MHz
Operating Temperature Range
-
1260
-
-
-
240.192
1300
7
0.2
100
-
1340
8
1
200
10 12
30 32
40 50
50 55
-
-
-
-
-20 - +80
Units
MHz
kHz
dB
dB
ns
dB
dB
dB
dB
°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: (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.
© 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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