參數(shù)資料
型號(hào): ICS552AR-01LFT
廠商: IDT, Integrated Device Technology Inc
文件頁(yè)數(shù): 9/11頁(yè)
文件大?。?/td> 0K
描述: IC OSC/MULT/BUFFER OCT 20-SSOP
產(chǎn)品培訓(xùn)模塊: Clock Distibution and Generation 1.0
標(biāo)準(zhǔn)包裝: 2,500
類(lèi)型: 時(shí)鐘發(fā)生器,扇出配送
PLL:
輸入: 時(shí)鐘,晶體
輸出: CMOS
電路數(shù): 1
比率 - 輸入:輸出: 1:8
差分 - 輸入:輸出: 無(wú)/無(wú)
頻率 - 最大: 200MHz
除法器/乘法器: 無(wú)/是
電源電壓: 3 V ~ 5.5 V
工作溫度: 0°C ~ 70°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 20-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 20-QSOP
包裝: 帶卷 (TR)
其它名稱(chēng): 552AR-01LFT
ICS552A-01
OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS
CLOCK MULTIPLIER AND BUFFER
IDT / ICS OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 7
ICS552A-01
REV E 051310
External Components
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
.
Decoupling Capacitors
As with any high-performance mixed-signal IC, the
ICS552A-01 must be isolated from system power
supply noise to perform optimally.
Decoupling capacitors of 0.01F must be connected
between each VDD and GND on pins 4 and 6, and 16
and 14. Other VDDs and GNDs can be connected to
these pins or directly to their respective ground planes.
Crystal Load Capacitors
The device crystal connections should include pads for
small capacitors from X1 to ground and from X2 to
ground. These capacitors are used to adjust the stray
capacitance of the board to match the nominally
required crystal load capacitance. Because load
capacitance can only be increased in this trimming
process, it is important to keep stray capacitance to a
minimum by using very short PCB traces (and no vias)
between the crystal and device. Crystal capacitors must
be connected from each of the pins X1 and X2 to
ground.
The value (in pF) of these crystal caps should equal (CL
-12 pF)*2. In this equation, CL= crystal load capacitance
in pF. Example: For a crystal with a 18 pF load
capacitance, two 12 pF capacitors should be used. For
a clock input, connect it X1/ICLK and leave X2
unconnected (floating).
PCB Layout Recommendations
For optimum device performance and lowest output
phase noise, the following guidelines should be
observed.
1) Each 0.01F decoupling capacitor should be
mounted on the component side of the board as close
to the VDD pin as possible. No vias should be used
between decoupling capacitor and VDD pin. The PCB
trace to VDD pin should be kept as short as possible, as
should the PCB trace to the ground via.
2) The external crystal should be mounted just next to
the device with short traces. The X1 and X2 traces
should not be routed next to each other with minimum
spaces, instead they should be separated and away
from other traces.
3) To minimize EMI, the 33
series termination resistor
(if needed) should be placed close to the clock output.
4) An optimum layout is one with all components on the
same side of the board, minimizing vias through other
signal layers.
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ICS552ARI01 制造商:ICS 制造商全稱(chēng):ICS 功能描述:Oscillator, Multiplier, and Buffer with 8 Outputs
ICS552ARI-01 功能描述:IC OSC/MULT/BUFFER OCT 20-SSOP RoHS:否 類(lèi)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:- 產(chǎn)品變化通告:Product Discontinuation 04/May/2011 標(biāo)準(zhǔn)包裝:96 系列:- 類(lèi)型:時(shí)鐘倍頻器,零延遲緩沖器 PLL:帶旁路 輸入:LVTTL 輸出:LVTTL 電路數(shù):1 比率 - 輸入:輸出:1:8 差分 - 輸入:輸出:無(wú)/無(wú) 頻率 - 最大:133.3MHz 除法器/乘法器:是/無(wú) 電源電壓:3 V ~ 3.6 V 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:16-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:管件 其它名稱(chēng):23S08-5HPGG
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