MK2058-01SILF

Manufacturer Part NumberMK2058-01SILF
DescriptionIC VCXO CLK JITTER ATTEN 20-SOIC
ManufacturerIDT, Integrated Device Technology Inc
TypeClock Jitter Attenuator
MK2058-01SILF datasheet
 

Specifications of MK2058-01SILF

PllYesInputLVCMOS
OutputLVCMOSNumber Of Circuits1
Ratio - Input:output2:1Differential - Input:outputNo/No
Frequency - Max27MHzDivider/multiplierNo/Yes
Voltage - Supply3.15 V ~ 3.45 VOperating Temperature-40°C ~ 85°C
Mounting TypeSurface MountPackage / Case20-SOIC
Frequency-max27MHzLead Free Status / RoHS StatusLead free / RoHS Compliant
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COMMUNICATIONS CLOCK JITTER ATTENUATOR
Description
The MK2058-01 is a VCXO (Voltage Controlled Crystal
Oscillator) based clock jitter attenuator designed for system
clock distribution applications. This monolithic IC, combined
with an external inexpensive quartz crystal, can be used to
replace a more costly hybrid VCXO retiming module. The
device accepts and outputs the same clock frequency in
selectable ranges covering 4 kHz to 27 MHz. A dual input
mux is also provided.
By controlling the VCXO frequency within a phase-locked
loop (PLL), the output clock is phase and frequency locked
to the input clock. Through selection of external loop filter
components, the PLL loop bandwidth and damping factor
can be tailored to meet system clock requirements. A loop
bandwidth down to the Hz range is possible.
Block Diagram
ICLK2
Input Clock
1
ICLK1
Input Clock
0
ISEL
3
SEL2:0
IDT™ COMMUNICATIONS CLOCK JITTER ATTENUATOR
Features
Excellent jitter attenuation for telecom clocks
Also serves as a general purpose clock jitter attenuator
for distributed system clocks and recovered data or video
clocks
2:1 Input MUX for input reference clocks
No switching glitches on output
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
+115ppm minimum crystal frequency pullability range,
using recommended crystal
Industrial temperature range
Low power CMOS technology
20-pin SOIC package
Pb (lead) free package
Single 3.3 V power supply
Pullable Crystal
ISET
X1
Phase
VCXO
Detector
Charge
Pump
CHGP
VIN
1
DATASHEET
MK2058-01
VDD
3
X2
VDD
Selectable
CLK
Divider
GND
4
MK2058-01
REV G 051310

MK2058-01SILF Summary of contents

  • Page 1

    ... COMMUNICATIONS CLOCK JITTER ATTENUATOR Description The MK2058- VCXO (Voltage Controlled Crystal Oscillator) based clock jitter attenuator designed for system clock distribution applications. This monolithic IC, combined with an external inexpensive quartz crystal, can be used to replace a more costly hybrid VCXO retiming module. The device accepts and outputs the same clock frequency in selectable ranges covering 4 kHz to 27 MHz ...

  • Page 2

    ... MHz MHz 13.5 MHz MHz 0 = GND VDD Floating Pin Description MK2058-01 Crystal Frequency 3072 x ICLK 16 x ICLK 10 x ICLK 6 x ICLK 2048 x ICLK 1716 x ICLK 384 x ICLK 128 x ICLK 4 x ICLK 3 x ICLK 2 x ICLK 1 x ICLK ...

  • Page 3

    ... Clock Selection 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 MK2058-01 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

    ... GND GND CHGP 9 12 ISET SET C Loop Damping P Bandwidth Factor (-3dB point 4 4.7 nF 120 Hz 1 4.7 nF 130 Hz 1 4.7 nF 160 Hz 1 4.7 nF 225 Hz 1 MK2058- GND ISEL ICLK1 ICLK2 SEL0 CLK NC SEL1 SEL2 REV G 051310 ...

  • Page 5

    ... VDD and the PCB ground plane. To further guard against interfering system supply noise, the MK2058-01 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 noise in the supply that can lead to output clock phase modulation ...

  • Page 6

    ... Other signal traces should be routed away from the MK2058-01. This includes signal traces just underneath the device layers adjacent to the ground IDT™ COMMUNICATIONS CLOCK JITTER ATTENUATOR plane layer used by the device ...

  • Page 7

    ... G Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK2058-01. These ratings, which are standard values for ICS 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 MK2058-01 REV G 051310 ...

  • Page 9

    ... Still air JA 1 m/s air flow JA 3 m/s air flow VCXO AND SYNTHESIZER Min. Typ. Max. Units -115 +115 ppm 8.5 27 MHz 0 ppm 1 150 ps p-p 210 ps p-p 150 ps p-p Min. Typ. Max. Units 83 C/W 71 C/W 58 C/W 46 C/W MK2058-01 REV G 051310 ...

  • Page 10

    ... MK2058-01SILF MK2058-01SILF MK2058-01SILFTR MK2058-01SILF "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

    ... MK2058-01 COMMUNICATIONS CLOCK JITTER ATTENUATOR 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 ...