Product Brief Integrated Circuit Systems, Inc. M624 VOLTAGE CONTROLLED SAW OSCILLATOR VIN 11 GND 10 GND GND 9 8 7 M624 6 GND 5 GND 4 RF_OUT (Top View) 12 1 2 3 GND VCC GND 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 PIN ASSIGNMENT (0.6 x 0.8 inch SMT) GND GENERAL DESCRIPTION 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 VCSO RF_OUT Phase Shifter VIN M624 PB Rev 2.2 Revised 16Apr2004 M624 Voltage Controlled SAW Oscillator Integrated Circuit Systems, Inc. ● Communications Modules ● w w w. i c s t . c o m ● tel (508) 852-5400