MK2049-36 datasheet, PDF - EEWORLD Datasheet

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MK2049-36: Description3.3 V Communications Clock PLL; File Size79KB，10 Pages; ManufacturerICS ( IDT ); Websitehttp://www.icst.com

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MK2049-36 Overview

3.3 V Communications Clock PLL

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PRELIMINARY INFORMATION

MK2049-36

3.3 V Communications Clock PLL

Features

• Packaged in 20 pin SOIC

• 3.3 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 clock rates include T1, E1, T3, E3,

and OC3 submultiples

• See the MK2049-01, -02, and -03 for more

selections at VDD = 5 V, and the MK2049-34 for

more selections at 3.3 V

Description

The MK2049-36 is a Phase-Locked Loop (PLL)

based clock synthesizer that accepts multiple input

frequencies. With an 8 kHz clock input as a

reference, the MK2049-36 generates T1, E1, T3,

E3, OC3/3, Gigabit Ethernet, and other

communications frequencies. This allows for the

generation of clocks frequency-locked to an 8 kHz

backplane clock, simplifying clock synchronization

in communications systems.

This part also has a jitter-attenuated Buffer

capability. In this mode, the MK2049-36 is ideal

for filtering jitter from with high jitter clocks.

ICS can customize these devices for many other

different frequencies. Contact your ICS

representative for more details.

Block Diagram

VDD

GND

RES

FS3:0

Clock

Input

Reference

Crystal

Oscillator

External/

Buffer Mode

Mux

PLL

Clock

Synthesis,

Control, and

Jitter

Attenuation

Circuitry

Output

Buffer

Output

Buffer

Output

Buffer

CLK

CLK/2

8 kHz

(External

Mode only)

FCAP

CAP1

CAP2

Revision 120400

Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800tel• www.icst.com

MDS 2049-36 A

MK2049-36 Related Products

	MK2049-36	MK2049-36SITR	MK2049-36SI
Description	3.3 V Communications Clock PLL	3.3 V Communications Clock PLL	3.3 V Communications Clock PLL

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