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MAX3670

Low-Jitter 155MHz/622MHz Clock Generator

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX3670 is a low-jitter 155MHz/622MHz reference clock generator IC designed for system clock distribution and frequency synchronization in OC-48 and OC-192 SONET/SDH and WDM transmission systems. The MAX3670 integrates a phase/frequency detector, an operational amplifier (op amp), prescaler dividers and input/output buffers. Using an external VCO, the MAX3670 can be configured easily as a phase-lock loop with bandwidth programmable from 15Hz to 20kHz.

The MAX3670 operates from a single +3.3V or +5.0V supply, and dissipates 150mW (typ) at 3.3V. The operating temperature range is from -40°C to +85°C. The chip is available in a 5mm x 5mm, 32-pin QFN package.

Data Sheet

Download	Rev 2	(PDF, 204kB)
E-Mail

An evaluation kit is available: MAX3670EVKIT

Key Features

Single +3.3V or +5.0V Supply
Power Dissipation: 150mW at +3.3V Supply
External VCO Center Frequencies (f_VCO): 155MHz to 670MHz
Reference Clock Frequencies: f_VCO, f_VCO/2, f_VCO/8
Main Clock Output Frequency: f_VCO
Optional Output Clock Frequencies: f_VCO, f_VCO/2, f_VCO/4, f_VCO/8
Low Intrinsic Jitter: <0.4ps_RMS
Loss-of-Lock Indicator
PECL Clock Output Interface

Applications/Uses

Clock Jitter Clean-Up and Frequency Synchronization
Frequency Conversion
OC-12 to OC-192 SONET/WDM Transport Systems
System Clock Distribution

Key Specifications:

Clock Generators

Part Number

Applications

f_IN
(MHz)

f_OUT
(MHz)

Fixed or Continuous Frequency

Output Levels

Out-
puts

PLLs

Program-
mability

Spread Spectrum

Output Jitter
(ps)

V_SUPPLY
(V)

Package/Pins

Budgetary Price

min

max

min

max

RMS

See Notes

MAX3670

SONET/SDH

155

670

Continuous

LVPECL

0.2

3.3

QFN/32

TQFN/32

$15.04 @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

Minimal Operating Circuit

More Information

New Product Press Release	[ 2001-11-28 ]
Loop Bandwidth Calculator

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-2166 Rev 2; 2009-09-30
This page last modified: 2009-09-30