參數(shù)資料
型號: MK2049-34SITR
元件分類: 時鐘產(chǎn)生/分配
英文描述: 77.76 MHz, OTHER CLOCK GENERATOR, PDSO20
封裝: 0.300 INCH, SOIC-20
文件頁數(shù): 1/8頁
文件大?。?/td> 146K
代理商: MK2049-34SITR
MK2049-34
MDS 2049-34 F
1
Revision 102203
Integrated Circuit Systems, Inc.
525 Race Street, San Jose, CA 95126
tel (408) 297-1201
www.icst.com
3.3 Volt Communications Clock VCXO PLL
Description
The MK2049-34 is a VCXO Phased Locked Loop (PLL)
based clock synthesizer that accepts multiple input
frequencies. With an 8 kHz clock input as a reference,
the MK2049-34 generates T1, E1, T3, E3, ISDN, xDSL,
and other communications frequencies. This allows for
the generation of clocks frequency-locked and
phase-locked to an 8 kHz backplane clock, simplifying
clock synchronization in communications systems. The
MK2409-34 can also accept a T1 or E1 input clock and
provide the same output for loop timing. All outputs are
frequency locked together and to the input.
This part also has a jitter-attenuated Buffer capability.
In this mode, the MK2049-34 is ideal for filtering jitter
from 27 MHz video clocks or other clocks with high
jitter.
ICS can customize these devices for many other
different frequencies.
Features
Packaged in 20-pin SOIC
3.3 V + 5% operation
Fixed I/O phase relationship on all selections
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, Loop
Timing frequencies, or 10 to 36 MHz
Locks to 8 kHz + 100 ppm (External mode)
Buffer Mode allows jitter attenuation of 10 to 36 MHz
input and x1/x0.5 or x2/x4 outputs
Exact internal ratios enable zero ppm error
Output clock rates include T1, E1, T3, E3, ISDN,
xDSL, and the OC3 submultiples
See also the MK2049-36 and MK2049-45
Block Diagram
VCXO-BASED
PLL
(MASTER CLOCK
GENERATOR)
EXTERNAL PULLABLE CRYSTAL
(external loop filter)
FREQUENCY
MULTIPLYING
PLL
2
INPUT REFERENCE
CLOCK
(TYPICALLY 8KHZ)
CLOCK OUTPUT
CLOCK OUTPUT / 2
8 KHZ (REGENERATED)
4
FREQUENCY SELECT
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MK2049-35 制造商:ICS 制造商全稱:ICS 功能描述:3.3 V Communications Clock PLL
MK2049-35SI 制造商:Integrated Device Technology Inc 功能描述:49.152 MHz, OTHER CLOCK GENERATOR, PDSO20
MK2049-35SITR 制造商:ICS 制造商全稱:ICS 功能描述:3.3 V Communications Clock PLL
MK2049-36 制造商:ICS 制造商全稱:ICS 功能描述:3.3 V Communications Clock PLL
MK2049-36SI 功能描述:IC VCXO PLL CLK SYNTH 20-SOIC RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器,PLL,頻率合成器 系列:- 標準包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:*