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參數(shù)資料
| 型號(hào)： | MK2049-34SAILF |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 77.76 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| 封裝： | 0.300 INCH, ROHS COMPLIANT, SOIC-20 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大?。?/td> | 213K |
| 代理商： | MK2049-34SAILF |
MK2049-34A
3.3 VOLT COMMUNICATIONS CLOCK VCXO PLL
VCXO AND SYNTHESIZER
IDT / 3.3 VOLT COMMUNICATIONS CLOCK VCXO PLL
6
MK2049-34A REV E 051310
External Component Selection
The MK2049-34A requires a minimum number of external components for proper operation. Decoupling capacitors of
0.01
F must be connected between VDD and GND pins close to the chip (especially pins 4 and 7, 15 and 17), and 33
series terminating resistors should be used on clock outputs with traces longer than one inch (assuming 50
traces). The
selection of additional external components is described in the following sections.
Loop Filter
Information on how to configure the external loop filter, connected between pins CAP1 and CAP2, can be found on the IDT
web site.
Crystal Operation
The MK2049-34A operates by phase locking the input signal to a VCXO which consists of the recommended pullable VCXO
crystals and the integrated VCXO oscillator circuit on the MK2049-34A. To achieve the best performance and reliability, the
layout guidelines shown on the previous page should be closely followed.
The frequency of oscillation of a quartz crystal is determined by its cut and by the load capacitors connected to it. The
MK2049-34A has variable load capacitors on-chip which “pull” or change the frequency of the crystal. External stray
capacitance must be kept to a minimum to ensure maximum pullability of the crystal. To achieve this, the layout should use
short traces between the MK2049-34A and the crystal.
For the VCXO to operate correctly, a pullable crystal must be used. For more information, including a list of approved
crystals, please refer to application note MAN05.
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the MK2049-34A. 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.
Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical
parameters are guaranteed only over the recommended operating temperature range.
Recommended Operation Conditions
Item
Rating
Supply Voltage, VDD
7 V
All Inputs and Outputs
-0.5 V to VDD+0.5 V
Ambient Operating Temperature
-40 to +85
° C
Storage Temperature
-65 to +150
° C
Junction Temperature
175
° C
Soldering Temperature
260
° C (10 to 20 seconds max.)
Parameter
Min.
Typ.
Max.
Units
Ambient Operating Temperature
-40
+85
° C
Power Supply Voltage (measured in respect to GND)
+3.15
+3.3
+3.45
V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MK2049-34SAI | 77.76 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| MK2049-34SI | 77.76 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| MK2049-34SITR | 77.76 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| MK2704S | 36.864 MHz, VIDEO CLOCK GENERATOR, PDSO8 |
| MK2705S | 24.576 MHz, VIDEO CLOCK GENERATOR, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MK2049-34SAILFTR | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 3.3 VOLT COMMUNICA. CLOCK VCXO PLL 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 |
| MK2049-34SAITR | 功能描述:IC VCXO PLL CLK SYNTH 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:* |
| MK2049-34SI | 制造商:ICS 制造商全稱:ICS 功能描述:3.3 V Communications Clock PLL |
| MK2049-34SITR | 制造商:ICS 制造商全稱:ICS 功能描述:3.3 V Communications Clock PLL |
| MK2049-35 | 制造商:ICS 制造商全稱:ICS 功能描述:3.3 V Communications Clock PLL |
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