MAX3625B

Low-Jitter, Precision Clock Generator with Three Outputs

0.36psRMS Jitter PLL Clock Generator Eliminates Need for Expensive Crystal Oscillators

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Status Explanations for product status codes

Active: In Production.

Description

The MAX3625B 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 MAX3625B has three LVPECL outputs. Selectable output dividers and a selectable feedback divider allow a range of output frequencies.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 0 (PDF, 312kB)
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An evaluation kit is available: MAX3625BEVKIT

Key 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/Uses

  • Ethernet Networking Equipment
  • Fibre Channel Storage Area Network
   

Key Specifications:

Clock Generators
Part Number Applications fIN
(MHz)
fIN
(MHz)
fOUT
(MHz)
fOUT
(MHz)
Fixed or Continuous Frequency Output Levels Out-
puts
PLLs Program-
mability
Spread Spectrum Output Jitter
(ps)
VSUPPLY
(V)
Package/Pins Budgetary Price
min max min max RMS See Notes
MAX3625B 
Ethernet
Fibre Channel
SONET/SDH
24.8 27 156.25 312.5 Fixed LVPECL 3 1 Pin No 0.14 3.3
TSSOP/24
$7.57 @1k
See All Clock Generators (34)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


Diagram

MAX3625B: Block Diagram
Block Diagram

More Information

New Product Press Release 2009-12-10 ]

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Information Index

Document Ref.: 19-4978 Rev 0; 2009-10-27
This page last modified: 2010-09-29




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