M685 - Integrated Circuit Systems

M685 DUAL SAW / SELECTABLE FREQUENCY VCSO

The M685 is a dual SAW, selectable frequency VCSO frequency source for low-jitter clock generation. An integrated SAW (surface acoustic wave) delay line implements the high-Q VCO (voltage controlled oscillator) function, which results in low output phase noise and very low jitter. The M685-01 is available in a range of center frequencies from 125 to 175 MHz..

Features

◆ Two integrated SAW devices and selectable output frequency; supports multi-rate optical interfaces ◆ M685-01 output frequencies from 125 to 175 MHz M685-02 output frequencies from 500 to 700 MHz (Specify center frequencies at time of order) ◆ Industry-standard Kvco for full compatibility ◆ Low phase jitter 0.2ps rms typical for the M685-02 (50kHz to 80MHz) ◆ Differential 3.3V LVPECL output ◆ Single 3.3V power supply ◆ Small 5 x 7.5mm SMT (surface mount) package Table 1: Sample of Available Output Frequencies Note 1: Specify VCSO center frequencies at time of order BLOCK DIAGRAM M680 M685 .