MK2049-45ASI

MK2049-45ASI Datasheet

MK2049-45A

Part	Datasheet
MK2049-45ASI	MK2049-45ASI (pdf)

Related Parts	Information
MK2049-45ASITR	MK2049-45ASITR

PDF Datasheet Preview
VOLT COMMUNICATIONS CLOCK PLL DATASHEET MK2049-45A The MK2049-45A is a dual Phase-Locked Loop PLL device which can provide frequency synthesis and jitter attenuation. The first PLL is VCXO based and uses a pullable crystal to track signal wander and attenuate input jitter. The second PLL is a translator for frequency multiplication. Basic configuration is determined by a Mode/Frequency Selection Table. Loop bandwidth and damping factor are programmable via external loop filter component selection. Buffer Mode accepts a 10 to 50 MHz input and will provide a jitter attenuated output at x ICLK, 1 x ICLK or 2 x ICLK. In this mode the MK2049-45A is ideal for filtering jitter from high frequency clocks. In External Mode, ICLK accepts an 8 kHz clock and will produce output frequencies from a table of common communciations clock rates, CLK and CLK/2. This allows for the generation of clocks frequency-locked to an 8 kHz backplane clock, simplifying clock synchronization in communications systems. The MK2049-45A can be dynamically switched between T1, E1, T3, E3 outputs with the same MHz crystal. IDT can customize these devices for many other different frequencies. Contact your IDT representative for more details. • Packaged in 20-pin SOIC • V + 5% operation • Meets the TR62411, ETS300 011, and GR-1244 specification for MTIE, Pull-in/Hold-in Range, Phase Transients, and Jitter Generation for Stratum 3, 4, and 4E • Accepts multiple inputs 8 kHz backplane clock, or 10 to 50 MHz • Locks to 8 kHz + 100 ppm External mode • Buffer Mode allows jitter attenuation of 10 - 50 MHz input and x1 / x0.5 or x1 / x2 outputs • Exact internal ratios enable zero ppm error • Output rates include T1, E1, T3, E3, and OC3 submultiples • Available in Pb lead free package • See also the MK2049-34 and MK2049-36 NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Block Diagram RSET ISET CS RS CAP2 CL CAP1 X1 CL Optional Crystal Load Caps External Pullable Crystal X2 ICLK FS3:0 Reference Divider used in buffer mode only Phase Detector VCXO PLL VCXO Charge Pump Feedback Divider N Divider Value Look-up Table Reference Divider Translator PLL Feedback Divider Output Divider Divide by 2 CLK/2 Ordering Information Part / Order Number MK2049-45ASI* MK2049-45ASITR* MK2049-45ASILF MK2049-45ASILFTR Marking see page 8 Shipping Packaging Tubes Tape and Reel Tubes Tape and Reel Package 20-pin SOIC 20-pin SOIC 20-pin SOIC 20-pin SOIC Temperature -40 to +85° C -40 to +85° C -40 to +85° C -40 to +85° C *NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Parts that are ordered with a "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology IDT assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT VOLT COMMUNICATIONS CLOCK PLL MK2049-45A VOLT COMMUNICATIONS CLOCK PLL VCXO AND SYNTHESIZER Innovate with IDT and accelerate your future networks. Contact: For Sales 800-345-7015 408-284-8200 Fax 408-284-2775 For Tech Support Corporate Headquarters Integrated Device Technology, Inc. 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA

PDF Datasheet Preview

VOLT COMMUNICATIONS CLOCK PLL

DATASHEET

MK2049-45A

The MK2049-45A is a dual Phase-Locked Loop PLL device which can provide frequency synthesis and jitter attenuation. The first PLL is VCXO based and uses a pullable crystal to track signal wander and attenuate input jitter. The second PLL is a translator for frequency multiplication. Basic configuration is determined by a Mode/Frequency Selection Table. Loop bandwidth and damping factor are programmable via external loop filter component selection.

Buffer Mode accepts a 10 to 50 MHz input and will provide a jitter attenuated output at x ICLK, 1 x ICLK or 2 x ICLK. In this mode the MK2049-45A is ideal for filtering jitter from high frequency clocks.

In External Mode, ICLK accepts an 8 kHz clock and will produce output frequencies from a table of common communciations clock rates, CLK and CLK/2. This allows for the generation of clocks frequency-locked to an 8 kHz backplane clock, simplifying clock synchronization in communications systems.

The MK2049-45A can be dynamically switched between T1, E1, T3, E3 outputs with the same MHz crystal.

IDT can customize these devices for many other different frequencies. Contact your IDT representative for more details.
• Packaged in 20-pin SOIC
• V + 5% operation
• Meets the TR62411, ETS300 011, and GR-1244
specification for MTIE, Pull-in/Hold-in Range, Phase Transients, and Jitter Generation for Stratum 3, 4, and 4E
• Accepts multiple inputs 8 kHz backplane clock, or 10 to
50 MHz
• Locks to 8 kHz + 100 ppm External mode
• Buffer Mode allows jitter attenuation of 10 - 50 MHz input
and x1 / x0.5 or x1 / x2 outputs
• Exact internal ratios enable zero ppm error
• Output rates include T1, E1, T3, E3, and OC3
submultiples
• Available in Pb lead free package
• See also the MK2049-34 and MK2049-36

NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01

Block Diagram

RSET ISET

CS RS

CAP2

CL CAP1 X1

CL Optional Crystal Load Caps

External Pullable Crystal X2

ICLK

FS3:0

Reference Divider
used in buffer mode only

Phase Detector

VCXO PLL

VCXO

Charge Pump

Feedback Divider N

Divider Value Look-up Table

Reference Divider

Translator PLL

Feedback Divider

Output Divider

Divide by 2

CLK/2
Ordering Information

Part / Order Number

MK2049-45ASI* MK2049-45ASITR* MK2049-45ASILF MK2049-45ASILFTR

Marking
see page 8

Shipping Packaging

Tubes Tape and Reel

Tubes Tape and Reel

Package
20-pin SOIC 20-pin SOIC 20-pin SOIC 20-pin SOIC

Temperature
-40 to +85° C -40 to +85° C -40 to +85° C -40 to +85° C
*NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01

Parts that are ordered with a "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant.

While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology IDT assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.

IDT VOLT COMMUNICATIONS CLOCK PLL

MK2049-45A VOLT COMMUNICATIONS CLOCK PLL

VCXO AND SYNTHESIZER

Innovate with IDT and accelerate your future networks. Contact:

For Sales
800-345-7015 408-284-8200 Fax 408-284-2775

For Tech Support

Corporate Headquarters

Integrated Device Technology, Inc.
2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA

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 MK2049-45ASI Datasheet file may be downloaded here without warranties.

Datasheet ID: MK2049-45ASI 637450