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參數(shù)資料
| 型號(hào)： | MK2059-01SILF |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 25.92 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| 封裝： | 0.300 INCH, ROHS COMPLIANT, SOIC-20 |
| 文件頁(yè)數(shù)： | 6/10頁(yè) |
| 文件大?。?/td> | 184K |
| 代理商： | MK2059-01SILF |
VCXO-Based Frame Clock Frequency Translator
MDS 2059-01 F
5
Revision 030106
Integrated Circuit Systems, Inc.
● 525 Race Street, San Jose, CA 95126 ● tel (408) 295-9800 ● www.icst.com
MK2059-01
A “normalized” PLL loop bandwidth may be calculated
as follows:
The “normalized” bandwidth equation above does not
take into account the effects of damping factor or the
second pole. However, it does provide a useful
approximation of filter performance.
The loop damping factor is calculated as follows:
Where:
RZ = Value of resistor in loop filter (Ohms)
ICP = Charge pump current (amps)
(refer to Charge Pump Current Table, below)
N = Crystal multiplier shown in the above table
C1 = Value of capacitor C1 in loop filter (Farads)
As a general rule, the following relationship should be
maintained between components C1 and C2 in the loop
filter:
Charge Pump Current Table
be found on the ICS web site.
Series Termination Resistor
Clock output traces over one inch should use series
termination. To series terminate a 50
trace (a
commonly used trace impedance), place a 33
resistor
in series with the clock line, as close to the clock output
pin as possible. The nominal impedance of the clock
output is 20
. (The optional series termination resistor
is not shown in the External Component Schematic.)
Decoupling Capacitors
As with any high performance mixed-signal IC, the
MK2059-01 must be isolated from system power
supply noise to perform optimally.
Decoupling capacitors of 0.01F must be connected
between each VDD and the PCB ground plane. To
further guard against interfering system supply noise,
the MK2059-01 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.
Recommended Power Supply Connection
for Optimal Device Performance
Crystal Load Capacitors
The device crystal connections should include pads for
small capacitors from X1 to ground and from X2 to
ground, shown as CL in the External Component
Schematic. These capacitors are used to adjust the
stray capacitance of the board to match the nominally
required crystal load capacitance. Because load
RSET
Charge Pump Current
(ICP)
1.4 M
10
A
680 k
20
A
540 k
25
A
120 k
100
A
NBW
RS ICP
×
575
×
N
---------------------------------------
=
Damping Factor
RS
625
I
CP
×
CS
×
N
-----------------------------------------
×
=
CP
CS
20
------
=
C onnec tion to 3.3V
Pow er Plane
Ferrite
B ead
B ulk D ec oupling C apac itor
(suc h as 1
F Tantalum )
VD D Pin
0.01
F D ecoupling C apacitors
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MK2059-01SILFTR | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 VCXO-BASED FRAME CLK FREQUENCY TRANSLATOR RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MK2059-01SITR | 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(wú)/無(wú) 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:* |
| MK2069-01 | 制造商:ICS 制造商全稱:ICS 功能描述:VCXO-Based Line Card Clock Synchronizer |
| MK2069-01GI | 功能描述:IC VCXO CLK SYNCHRONIZER 56TSSOP 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(wú)/無(wú) 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:* |
| MK2069-01GILF | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 VCXO-BASED LINE CARD CLOCK SYNCHRONIZER 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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