mk1581-01 Integrated Device Technology, mk1581-01 Datasheet
mk1581-01
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mk1581-01 Summary of contents
Page 1
... LOW PHASE NOISE T1/E1 CLOCK GENERATOR Description The MK1581-01 provides synchronization and timing control for T1 and E1 based network access or multitrunk telecommunication systems. The device accepts an 8 kHz frame clock input and uses an on-chip VCXO to produce a synchronized low phase noise clock output. This monolithic IC, combined with an external inexpensive quartz crystal, can be used to replace a more costly hybrid VCXO retiming module ...
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... Crystal Output. Connect this pin to the specified crystal. – Crystal Input. Connect this pin to the specified crystal. 2 VCXO AND SYNTHESIZER Output Input Crystal SEL Clock Clock Used (MHz) (MHz) 8 kHz 0 1.544 24.704 8 kHz 1 2.048 24.576 Pin Description MK1581-01 REV D 073007 ...
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... 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 MK1581-01 is able to generate a low jitter, low phase-noise output clock. The low bandwidth capability of the PLL circuit serves to provide input clock jitter attenuation and enables stable operation with the low frequency input reference clock ...
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... GND CLK GND GND GND GND CHGP S ISET SET S S 120 k 1.0 M 0.1 F 120 k 1 VCXO AND SYNTHESIZER Pullable Crystal R SET Loop Damping C Bandwidth P Factor (-3dB point) 4 1.4 4 1.4 MK1581-01 REV D 073007 ...
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... S P guard against interfering system supply noise, the MK1581-01 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 ...
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... Other signal traces should be routed away from the MK1581-01. This includes signal traces just underneath the device layers adjacent to the ground plane layer used by the device. ...
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... G Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK1581-01. 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. ...
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... VCXO AND SYNTHESIZER Typ. Max. Units +85 C +3.3 +3.45 V Min. Typ. Max. 3.15 3.3 3. 0.8 VDD/2+1 VDD/2-1 -10 +10 -10 +10 7 VDD-0.4 2.4 0.4 ±50 0 VDD 20 Min. Typ. Max. Units -115 +115 ppm 24.704 24.576 MHz 0 ppm MK1581-01 REV D 073007 Units ...
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... Conditions t 0.8 to 2.0V 2.0 to 0.8V Note Peak to Peak ja Symbol Conditions Still air JA 1 m/s air flow JA 3 m/s air flow VCXO AND SYNTHESIZER Min. Typ. Max. Units 1.5 ns 1.5 ns 150 ps p-p Min. Typ. Max. Units 78 C/W 70 C/W 68 C/W 37 C/W MK1581-01 REV D 073007 ...
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... Marking MK1581-01GI MK1581-01GI MK1581-01GITR MK1581-01GI MK1581-01GILF 15810GIL MK1581-01GILFTR 15810GIL 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 ...
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... MK1581-01 LOW PHASE NOISE T1/E1 CLOCK GENERATOR 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 ...