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Integrated Circuit Systems, Inc.
Product Brief
M624
VOLTAGE CONTROLLED SAW OSCILLATOR
PIN ASSIGNMENT (0.6 x 0.8 inch SMT)
GND GND GND 7
GENERAL DESCRIPTION
The M624 is a VCSO (Voltage Controlled SAW Oscillator) frequency source specifically designed for high-speed SONET/SDH applications for rates up to OC-768. Its integrated SAW (surface acoustic wave) delay line provides excellent phase noise performance and spectral purity, while requiring a low supply voltage (+3.3V). An extremely linear tuning range makes the M624 especially suited for phase-locked loop applications, which are extensively used in timing circuits and clock and data recovery in fiber-linked data systems. The SMT VCSO's small size and minimal power requirements make it ideal for the miniturization applications that are emerging, without sacrificing performance.
GND
10
9
8
6
GND
VIN
11
M624
(Top View)
5
GND
VCC
12
1 GND
2 GND
3 GND
4
RF_OUT
FEATURES
* VCSO center frequency from 500 to 625MHz * Low phase noise -100dBc/Hz @ 1kHz offset * Superior SAW jitter performance and aging; * * * *
jitter 0.015ps rms typical (12kHz-20MHz) Excellent frequency stability and tuning linearity Low power consumption (300 mW) Single 3.3V power supply Small 0.6 x 0.8 inch SMT (surface mount) package
BLOCK DIAGRAM
M624
SAW Delay Line
Ceramic Filter Phase Shifter
RF_OUT
VCSO
VIN
M624 PB Rev 2.2
M624 Voltage Controlled SAW Oscillator
Revised 16Apr2004
Integrated Circuit Systems, Inc.
Communications Modules
w w w. i c s t . c o m
tel (508) 852-5400

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