MITEL DW9268 Technical data

查询DS4025供应商

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

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

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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