M624 PB Rev 2.2

Revised 16Apr2004

Integ r ated Circuit Systems , Inc. ● Comm unication s Modules ● ww w. i c s t . c o m ● tel (508) 852-5400

Integrated

Circuit

Systems, Inc.

Product Br ief

M624

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.

jitter 0.015ps rms typical (12kHz-20MHz)

M624

( T op V i ew )

12

3

7

8

9

GND

RF_OUT

GND

GND

VCC

VIN

4

5

6

10

11

12

M624

VIN

RF_OUT

SAW Delay Line

Phase

Shifter

Ceramic Filter

VCSO

M624 Voltage Controlled SAW Oscillator