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參數(shù)資料
| 型號(hào)： | MK2049-45SITR |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 125 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| 封裝： | 0.300 INCH, SOIC-20 |
| 文件頁數(shù)： | 4/10頁 |
| 文件大小： | 237K |
| 代理商： | MK2049-45SITR |
MK2049-45
3.3 VOLT COMMUNICATIONS CLOCK PLL
VCXO AND SYNTHESIZER
IDT / ICS 3.3 VOLT COMMUNICATIONS CLOCK PLL
3
MK2049-45
REV G 101904
Output Decoding Table - External Mode (MHz)
Output Decoding Table - Buffer Mode (MHz)
0 = connect directly to ground, 1 = connect directly to VDD
Crystal is connected to pins 2 and 3; clock input is applied to pin 13.
Functional Description
The MK2049-45 is a clock generator IC that generates an
output clock directly from an internal VCXO circuit which
works in conjunction with an external quartz crystal. The
VCXO is controlled by an internal PLL (Phase Locked Loop)
circuit, enabling the device to perform clock regeneration
from an input reference clock. The MK2049-45 is configured
to provide a high frequency communications reference clock
output from an 8 kHz input clock or to jitter attenuate and
buffer a high frequency input clock. There are 14 selectable
output frequencies and two buffer mode selections. Please
refer to the Output 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 MK2049-45 is able to
generate a low jitter, low phase-noise output clock within a
18
CAP2
Loop
Filter
Connect the loop filter capacitors and resistor between this pin and CAP1.
19
RES
-
Connect a resistor to ground. See table.
20
FS0
Input
Frequency select 0. Determines CLK input/outputs per table on page 2.
Internal pull-up resistor.
ICLK
FS3
FS2
FS1
FS0
CLK/2
CLK
8k
Crystal
Used (MHz)
N
8 kHz
0000
1.544
3.088
8 kHz
24.576
3072
8 kHz
0001
2.048
4.096
8 kHz
24.576
3072
8 kHz
0010
22.368
44.736
8 kHz
24.576
3072
8 kHz
0011
17.184
34.368
8 kHz
24.576
3072
8 kHz
0100
19.44
38.88
8 kHz
19.44
2430
8 kHz
0101
12.8
25.6
8 kHz
25.6
3200
8 kHz
0110
25.92
51.84
8 kHz
17.28
2160
8 kHz
0111
4.096
8.192
8 kHz
16.384
2048
8 kHz
1000
18.528
37.056
8 kHz
24.704
3088
8 kHz
1001
12.352
24.704
8 kHz
24.704
3088
8 kHz
1010
24.576
49.152
8 kHz
16.384
2048
8 kHz
1011
16.384
32.768
8 kHz
16.384
2048
8 kHz
1100
17.28
34.56
8 kHz
17.28
2160
8 kHz
1101
62.5
125
8 kHz
25
3125
Pin
Number
Pin
Name
Pin
Type
Pin Description
ICLK
FS3
FS2
FS1
FS0
CLK/2
CLK
8k
Crystal
N
20 - 50
1110
ICLK
2*ICLK
N/A
ICLK/2
3
10 - 25
1111
ICLK/2
ICLK
N/A
ICLK
3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MK2049-45SILFTR | 125 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| MK2058-01SILF | OTHER CLOCK GENERATOR, PDSO20 |
| MK2704SLF | 36.864 MHz, VIDEO CLOCK GENERATOR, PDSO8 |
| MK2704SLFTR | 36.864 MHz, VIDEO CLOCK GENERATOR, PDSO8 |
| MK2704STR | 36.864 MHz, OTHER CLOCK GENERATOR, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MK205/100G | 制造商:Fischer Elektronik GmbH & Co KG 功能描述:Bulk |
| MK2058-01 | 制造商:ICS 制造商全稱:ICS 功能描述:Communications Clock Jitter Attenuator |
| MK205801SI | 制造商:ICS 功能描述: |
| MK2058-01SI | 功能描述:IC VCXO CLK JITTER ATTEN 20-SOIC RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:- 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時(shí)鐘 輸出:時(shí)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:* |
| MK2058-01SILF | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 COMMUNICATIONS CLOCK JITTER ATTENUATOR RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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