General Description
The MAX3625A is a low-jitter, precision clock generator optimized for networking applications. The device integrates a crystal oscillator and a phase-locked loop (PLL) clock multiplier to generate high-frequency clock outputs for Ethernet, 10G Fibre Channel, and other networking applications.
Maxim’s proprietary PLL design features ultra-low jitter and excellent power-supply noise rejection, minimizing design risk for network equipment.
The MAX3625A has three LVPECL outputs. Selectable output dividers and a selectable feedback divider allow a range of output frequencies.

Features
♦ Crystal Oscillator Interface: 24.8MHz to 27MHz
♦ CMOS Input: Up to 320MHz
♦ Output Frequencies
   Ethernet: 62.5MHz, 125MHz, 156.25MHz, 312.5MHz
   10G Fibre Channel: 159.375MHz, 318.75MHz
♦ Low Jitter
   0.14psRMS (1.875MHz to 20MHz)
   0.36psRMS (12kHz to 20MHz)
♦ Excellent Power-Supply Noise Rejection
♦ No External Loop Filter Capacitor Required

Applications
   Ethernet Networking Equipment
   Fibre Channel Storage Area Network