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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

Application Notes

Application Note 462		HFAN-04.0.2: Converting between RMS and Peak-to-Peak Jitter at a Specified BER
Application Note 995		MAX3892: 2.7Gbps Transponder Applications Using the MAX3892, MAX3882, and MAX3670 Chipset
Application Note 1032		MAX3670: Loop-Filter Configuration for the MAX3670 Low-Jitter PLL Reference Clock Generator
Application Note 1078		MAX3670: Loop Bandwidth Calculator for the MAX3670
Application Note 3258		HFTA-08.0: Receivers and Transmitters in DWDM Systems
Application Note 3766		HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules

Reliability Reports

Reliability Report:	MAX3670.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX3670EGJ			Active	QFN;32 pin;26 mm² Outline Drawing:21-0091 (PDF) Land Pattern: 90-0279 (PDF) Use pkgcode/variation: G3255-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3670EGJ-T			Active	QFN;32 pin;26 mm² Outline Drawing:21-0091 (PDF) Land Pattern: 90-0279 (PDF) Use pkgcode/variation: G3255-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3670ETJ+			Active	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0001 (PDF) Use pkgcode/variation: T3255+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX3670ETJ+T			Active	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0001 (PDF) Use pkgcode/variation: T3255+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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Evaluation Kits

MAX3670EVKIT

Evaluation Kit for the MAX3670

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