MAX3670ETJ+D

MAX3670ETJ+D Datasheet

MAX3670

Part	Datasheet
MAX3670ETJ+D	MAX3670ETJ+D (pdf)

Related Parts	Information
MAX3670ETJ+TD	MAX3670ETJ+TD
MAX3670ETJ+T	MAX3670ETJ+T
MAX3670ETJ+	MAX3670ETJ+

PDF Datasheet Preview
MAX3670 Low-Jitter 155MHz/622MHz Clock Generator 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, 32-pin QFN package. OC-12 to OC-192 SONET/WDM Transport Systems Clock Jitter Clean-Up and Frequency Synchronization Frequency Conversion System Clock Distribution Single +3.3V or +5.0V Supply Power Dissipation 150mW at +3.3V Supply External VCO Center Frequencies fVCO 155MHz to 670MHz Reference Clock Frequencies fVCO, fVCO/2, fVCO/8 Main Clock Output Frequency fVCO Optional Output Clock Frequencies fVCO, fVCO/2, fVCO/4, fVCO/8 Low Intrinsic Jitter < 0.4psRMS Loss-of-Lock Indicator PECL Clock Output Interface Ordering Information PART TEMP RANGE PIN-PACKAGE MAX3670EGJ -40°C to +85°C 32 QFN-EP* MAX3670ETJ+ -40°C to +85°C 32 Thin QFN-EP* +Denotes a lead Pb -free/RoHS-compliant package. *EP = Exposed pad. Pin Configuration appears at end of data sheet. Typical Application Circuit 155MHz 3.3V 142Ω KVCO = 25kHz/V 155MHz 142Ω REFCLK+ REFCLK- 3.3V VCCD VCOIN+ 100Ω VCOIN- MAX3670 MOUT+ MOUT- 142Ω 142Ω RSEL N.C. VSEL N.C. MAX3892 16:1 SERIALIZER 0.01uF 332Ω 4700pF 500kΩ 4700pF 500kΩ OPAMPOPAMP+ POLAR REPRESENTS A CONTROLLED-IMPEDANCE TRANSMISSION LINE. GSEL1 N.C. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at MAX3670 Low-Jitter 155MHz/622MHz Clock Generator ABSOLUTE MAXIMUM RATINGS Supply Voltage to +7V Voltage Range at C2+, C2-, THADJ, CTH, GSEL1, GSEL2, GSEL3, LOL, RSEL, REFCLK-, REFCLK+, VSEL, VCOIN+, VCOIN-, VC, POLAR, PSEL1, PSEL2, COMP, OPAMP+, OPAMP- ..................................-0.5V to VCC + 0.5V Continuous Power Dissipation TA = +70°C 32 QFN derate 33.3mW/°C above +70°C .....................2.7W 32 Thin QFN derate 34.5mW/°C above +70°C ..............2.8W PECL Output Current MOUT+, MOUT-, POUT+, Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range. ............................-65°C to +160°C Lead Temperature soldering, 10s .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS VCC = +3.3V ±10% or VCC = +5.0V ±10%, TA = -40°C to +85°C. Typical values are at VCC = +3.3V and TA = +25°C, unless otherwise noted. Note 1 PARAMETER Supply Current Note 2 INPUT SPECIFICATIONS REFCLK±, VCOIN± Input High Voltage CONDITIONS MIN TYP MAX UNITS VCC - Input Low Voltage VCC - Input Bias Voltage Common-Mode Input Resistance Differential Input Resistance Differential Input Voltage Swing PECL OUTPUT SPECIFICATIONS Output High Voltage AC-coupled 0°C to +85°C -40°C to 0°C Output Low Voltage TTL SPECIFICATIONS Output High Voltage Output Low Voltage 0°C to +85°C VOL -40°C to 0°C Sourcing 20µA Sinking 2mA VCC - 1900 mVp-p V VCC V VCC MAX3670 Low-Jitter 155MHz/622MHz Clock Generator DC ELECTRICAL CHARACTERISTICS continued VCC = +3.3V ±10% or VCC = +5.0V ±10%, TA = -40°C to +85°C. Typical values are at VCC = +3.3V and TA = +25°C, unless otherwise noted. Note 1 PARAMETER CONDITIONS Added the PKG CODE column to the Ordering Information table updated the package outline drawing in the Package Information section. 9/09 Added the lead Pb -free TQFN package to the Ordering Information table replaced the package outline drawing with a table in the Package Information section. PAGES CHANGED 1, 12 1, 11 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.

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MAX3670

Low-Jitter 155MHz/622MHz Clock Generator

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, 32-pin QFN package.

OC-12 to OC-192 SONET/WDM Transport Systems

Clock Jitter Clean-Up and Frequency Synchronization

Frequency Conversion

System Clock Distribution

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

PART

TEMP RANGE

PIN-PACKAGE

MAX3670EGJ
-40°C to +85°C
32 QFN-EP*

MAX3670ETJ+
-40°C to +85°C
32 Thin QFN-EP*
+Denotes a lead Pb -free/RoHS-compliant package. *EP = Exposed pad.

Pin Configuration appears at end of data sheet.

Typical Application Circuit
155MHz
3.3V
142Ω

KVCO = 25kHz/V 155MHz
142Ω

REFCLK+ REFCLK-
3.3V VCCD

VCOIN+ 100Ω

VCOIN-

MAX3670

MOUT+ MOUT-
142Ω 142Ω

RSEL

N.C.

VSEL

N.C.

MAX3892
16:1 SERIALIZER
0.01uF
332Ω 4700pF
500kΩ
4700pF
500kΩ

OPAMPOPAMP+

POLAR

REPRESENTS A CONTROLLED-IMPEDANCE TRANSMISSION LINE.

GSEL1

N.C.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at

MAX3670

Low-Jitter 155MHz/622MHz Clock Generator

ABSOLUTE MAXIMUM RATINGS

Supply Voltage to +7V Voltage Range at C2+, C2-, THADJ, CTH, GSEL1, GSEL2,

GSEL3, LOL, RSEL, REFCLK-, REFCLK+, VSEL, VCOIN+, VCOIN-, VC, POLAR, PSEL1, PSEL2, COMP, OPAMP+, OPAMP- ..................................-0.5V to VCC + 0.5V Continuous Power Dissipation TA = +70°C 32 QFN derate 33.3mW/°C above +70°C .....................2.7W 32 Thin QFN derate 34.5mW/°C above +70°C ..............2.8W

PECL Output Current MOUT+, MOUT-, POUT+,

Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range. ............................-65°C to +160°C Lead Temperature soldering, 10s .................................+300°C

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

DC ELECTRICAL CHARACTERISTICS

VCC = +3.3V ±10% or VCC = +5.0V ±10%, TA = -40°C to +85°C. Typical values are at VCC = +3.3V and TA = +25°C, unless otherwise noted. Note 1

PARAMETER

Supply Current

Note 2

INPUT SPECIFICATIONS REFCLK±, VCOIN±

Input High Voltage

CONDITIONS

MIN TYP MAX UNITS

VCC -

Input Low Voltage

VCC -

Input Bias Voltage

Common-Mode Input Resistance Differential Input Resistance Differential Input Voltage Swing PECL OUTPUT SPECIFICATIONS

Output High Voltage

AC-coupled 0°C to +85°C -40°C to 0°C

Output Low Voltage

TTL SPECIFICATIONS Output High Voltage Output Low Voltage
0°C to +85°C VOL
-40°C to 0°C

Sourcing 20µA

Sinking 2mA

VCC -
1900 mVp-p

V VCC

V VCC

MAX3670

Low-Jitter 155MHz/622MHz Clock Generator

DC ELECTRICAL CHARACTERISTICS continued

VCC = +3.3V ±10% or VCC = +5.0V ±10%, TA = -40°C to +85°C. Typical values are at VCC = +3.3V and TA = +25°C, unless otherwise noted. Note 1

PARAMETER

CONDITIONS
Added the PKG CODE column to the Ordering Information table updated the package outline drawing in the Package Information section.
9/09
Added the lead Pb -free TQFN package to the Ordering Information table replaced the package outline drawing with a table in the Package Information section.

PAGES CHANGED
1, 12
1, 11

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
2009 Maxim Integrated Products

Maxim is a registered trademark of Maxim Integrated Products, Inc.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MAX3670ETJ+D Datasheet file may be downloaded here without warranties.

Datasheet ID: MAX3670ETJ+D 647315