MK2059-01SILFTR

Manufacturer Part NumberMK2059-01SILFTR
DescriptionIC VCXO CLK JITTER ATTEN 20-SOIC
ManufacturerIDT, Integrated Device Technology Inc
TypeClock Frequency Translator
MK2059-01SILFTR datasheet
 

Specifications of MK2059-01SILFTR

PllYesInputClock
OutputCMOSNumber Of Circuits1
Ratio - Input:output2:1Differential - Input:outputNo/No
Frequency - Max25.92MHzDivider/multiplierNo/Yes
Voltage - Supply3.15 V ~ 3.45 VOperating Temperature-40°C ~ 85°C
Mounting TypeSurface MountPackage / Case20-SOIC
Frequency-max24.704MHzLead Free Status / RoHS StatusLead free / RoHS Compliant
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VCXO-BASED FRAME CLOCK FREQUENCY TRANSLATOR
Description
The MK2059-01 is a VCXO (Voltage Controlled Crystal
Oscillator) based clock generator that produces common
telecommunications reference frequencies. The output
clock is phase locked to an 8kHz (frame rate) input
reference clock. The MK2059-01 also provides jitter
attenuation. Included in the selection of output frequencies
are these common system clocks:
1.544 MHz (T1)
2.048 (E1)
19.44 MHz (OC-3)
16.384 MHz (8x E1)
This monolithic IC, combined with an external inexpensive
quartz crystal, can be used to replace a more costly hybrid
VCXO retiming module. Through selection of external loop
filter components, the PLL loop bandwidth and damping
factor can be tailored to meet input clock jitter attenuation
requirements. A loop bandwidth down to the Hz range is
possible
Block Diagram
ICLK2
1
8kHz Ref Input
ICLK1
0
8kHz Ref Input
ISEL
3
SEL2:0
IDT™ VCXO-BASED FRAME CLOCK FREQUENCY TRANSLATOR
Features
Generates T1, E1, OC-3 and other common telecom
clock frequencies from an 8kHz frame clock
Configurable jitter attenuation characteristics, excellent
for use as a Stratum source de-jitter circuit
2:1 Input MUX for input reference clocks
VCXO-based clock generation offers very low jitter and
phase noise generation
Output clock is phase and frequency locked to the
selected input reference clock
Fixed input to output phase relationship (except for 1.544
MHz and 2.048 MHz output selections)
+115ppm minimum crystal frequency pullability range,
using recommended crystal
Industrial temperature range
Low power CMOS technology
20 pin SOIC package
Single 3.3V power supply
Pb (lead) free package
Pullable Crystal
ISET
X1
Phase
Detector
Charge
Pump
Feedback
CHGP
VIN
1
DATASHEET
MK2059-01
VDD
3
X2
VDD
Output
VCXO
Divider
Divider
GND
4
MK2059-01
REV H 051310
CLK

MK2059-01SILFTR Summary of contents

  • Page 1

    ... VCXO-BASED FRAME CLOCK FREQUENCY TRANSLATOR Description The MK2059- VCXO (Voltage Controlled Crystal Oscillator) based clock generator that produces common telecommunications reference frequencies. The output clock is phase locked to an 8kHz (frame rate) input reference clock. The MK2059-01 also provides jitter attenuation. Included in the selection of output frequencies are these common system clocks: 1 ...

  • Page 2

    ... VCXO AND SYNTHESIZER Output SEL2 SEL1 SEL0 Clock (MHz 1.544 2.048 16.384 17.664 18.528 20. 25. 25. 19. 20. 24.704 24.576 0 = GND VDD Floating Pin Description MK2059-01 Crystal Used (MHz) 24.704 24.576 16.384 17.664 18.528 20.00 25.00 25.92 19.44 20.48 24.704 24.576 REV H 051310 ...

  • Page 3

    ... Table on Page 2. Most typical PLL clock devices use an internal VCO (Voltage Controlled Oscillator) for output clock generation. By using a VCXO with an external crystal, the MK2059-01 is able to generate a low jitter, low phase-noise output clock within a low bandwidth PLL. This serves to provide input clock jitter attenuation and enables stable operation with a low frequency reference clock ...

  • Page 4

    ... M 0.1 F 120 k 1.0 M 0.1 F 120 k 1.0 M 0.1 F 120 k 1.0 M 0.1 F 120 k 1.0 M 0.1 F 120 k 1 VCXO AND SYNTHESIZER C Loop Damping P Bandwidth Factor (-3dB point) 4 1.4 4 1.4 4 1.7 4 1.7 4 1.6 4 1.6 4 1.4 4 1.4 4 1.6 4 1.6 4 1.4 4 1.4 MK2059-01 REV H 051310 ...

  • Page 5

    ... VDD and the PCB ground plane. To further guard against interfering system supply noise, the in loop filter (Farads) MK2059-01 should use one common connection to the PCB power plane as shown in the diagram on the next page. The ferrite bead and bulk capacitor help reduce lower frequency ...

  • Page 6

    ... Other signal traces should be routed away from the MK2059-01. This includes signal traces just underneath the device layers adjacent to the ground plane layer used by the device. ...

  • Page 7

    ... G Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK2059-01. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. ...

  • Page 8

    ... Symbol Conditions VDD IDD Clock outputs unloaded, VDD = 3. VDD OUT 8 VCXO AND SYNTHESIZER Typ. Max. Units +85 C +3.3 +3.45 V Min. Typ. Max. Units 3.15 3.3 3. VDD-0 0.8 V VDD/2+1 V VDD/2-1 V -10 +10 A -10 + VDD-0.4 V 2.4 V 0.4 V ± VDD V 20 MK2059-01 REV H 051310 ...

  • Page 9

    ... MHz Referenced to jf Mitel/Zarlink MT9045, Note 3 t Referenced to jf Mitel/Zarlink MT9045, Note 3 9 VCXO AND SYNTHESIZER Min. Typ. Max. Units -115 +115 ppm 13.5 27 MHz 0 ppm 1 150 ps p-p 227 ps p-p 170 ps p-p MK2059-01 REV H 051310 ...

  • Page 10

    ... Part / Order Number Marking MK2059-01SILF MK2059-01SILF MK2059-01SILFTR MK2059-01SILF "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 ...

  • Page 11

    ... MK2059-01 VCXO-BASED FRAME CLOCK FREQUENCY TRANSLATOR Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. www.idt.com © 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 ...