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MAX3625A

Maxim Integrated Products
Part Number MAX3625A
Manufacturer Maxim Integrated Products
Description Precision Clock Generator
Published Jul 1, 2009
Detailed Description 19-4626; Rev 0; 5/09 www.DataSheet4U.com KIT ATION EVALU E L B A AVAIL Low-Jitter, Precision Clock Generator with Thre...
Datasheet PDF File MAX3625A PDF File

MAX3625A
MAX3625A

Overview
19-4626; Rev 0; 5/09 www.
DataSheet4U.
com KIT ATION EVALU E L B A AVAIL Low-Jitter, Precision Clock Generator with Three Outputs General Description 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 MAX3625A 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.
Applications Ethernet Networking Equipment Fibre Channel Storage Area Network Pin Configuration and Typical Application Circuit appear at end of data sheet.
PART MAX3625ACUG+ Ordering Information TEMP RANGE 0°C to +70°C PIN-PACKAGE 24 TSSOP +Denotes a lead(Pb)-free/RoHS-compliant package.
Block Diagram IN_SEL MR BYPASS SELA[1:0] SELA[1:0] SELB[1:0] FB_SEL BYPASS QA_OE RESET LOGIC/POR RESET DIVIDER NA LVPECL BUFFER QA QA RESET LVCMOS REF_IN 27pF X_IN CRYSTAL OSCILLATOR X_OUT 33pF DIVIDERS: M = 24, 25 NA = 10, 2, 4, 5 NB = 10, 2, 4, 5 LVPECL BUFFER QB0 QB0 DIVIDER M DIVIDER NB 1 0 PFD FILTER RESET 620MHz TO 648MHz VCO 1 RESET LVPECL BUFFER QB1 QB1 QB_OE 0 MAX3625A FB_SEL SELB[1:0] ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s webs...


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