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参数资料
| 型号： | ICS650G-36LFT |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 3/8页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK NETWORK/PCI 16-TSSOP |
| 产品变化通告： | Product Discontinuation 09/Feb/2012 |
| 标准包装： | 2,500 |
| 类型： | 时钟/频率合成器 |
| PLL： | 带旁路 |
| 输入： | 时钟，晶体 |
| 输出： | CMOS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:4 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 25MHz |
| 除法器/乘法器： | 无/无 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | 650G-36LFT |
ICS650-36
NETWORKING AND PCI CLOCK SOURCE
CLOCK SYNTHESIZER
IDT / ICS NETWORKING AND PCI CLOCK SOURCE
3
ICS650-36
REV F 051310
External Components
Decoupling Capacitor
As with any high performance mixed-signal IC, the
ICS650-36 must be isolated from system power supply
noise to perform optimally.
A decoupling capacitor of 0.01F must be connected
between each VDD and the PCB ground plane.
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
.
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 -6
pF)*2. In this equation, CL= crystal load capacitance in pF.
Example: For a crystal with a 16 pF load capacitance, each
crystal capacitor would be 20 pF [(16-6) x 2 = 20].
PCB Layout Recommendations
Observed the following guidelines for optimum device
performance and lowest output phase noise:
1) The 0.01F decoupling capacitors should be mounted on
the component side of the board as close to the VDD pin as
possible. No vias should be used between the decoupling
capacitors and VDD pins. The PCB trace to VDD pins
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) Place the 33
series termination resistor (if needed)
close to the clock output to minimize EMI.
4) An optimum layout is one with all components on the
same side of the board, minimizing vias through other signal
layers. Other signal traces should be routed away from the
ICS650-36. This includes signal traces just underneath the
device, or on layers adjacent to the ground plane layer used
by the device.
14
REF
Output
Reference 25 MHz clock output. Weak internal pull-down when
tri-state.
15
GND
Power
Connect to ground.
16
VDD
Power
Connect to +3.3 V.
Pin
Number
Pin
Name
Pin
Type
Pin Description
相关PDF资料 |
PDF描述 |
|---|---|
| ICS650G-40LFT | IC CLOCK ETHERNET SWITCH 16TSSOP |
| ICS650GI-41LF | IC CLK SYNTHESIZER 16-TSSOP |
| ICS650R-01ILF | IC CLK SYNTHESIZER 20-SSOP |
| ICS650R-07ILF | IC NETWORKING CLK SOURCE 20-SSOP |
| ICS651MILFT | IC CLK BUFFER 1:4 200MHZ 8-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS650G-36T | 功能描述:IC CLOCK NETWORK/PCI 16-TSSOP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:- 产品变化通告:Product Discontinuation 04/May/2011 标准包装:96 系列:- 类型:时钟倍频器，零延迟缓冲器 PLL:带旁路 输入:LVTTL 输出:LVTTL 电路数:1 比率 - 输入:输出:1:8 差分 - 输入:输出:无/无 频率 - 最大:133.3MHz 除法器/乘法器:是/无 电源电压:3 V ~ 3.6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:管件 其它名称:23S08-5HPGG |
| ICS650G-40 | 功能描述:IC CLOCK ETHERNET SWITCH 16TSSOP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:- 产品变化通告:Product Discontinuation 04/May/2011 标准包装:96 系列:- 类型:时钟倍频器，零延迟缓冲器 PLL:带旁路 输入:LVTTL 输出:LVTTL 电路数:1 比率 - 输入:输出:1:8 差分 - 输入:输出:无/无 频率 - 最大:133.3MHz 除法器/乘法器:是/无 电源电压:3 V ~ 3.6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:管件 其它名称:23S08-5HPGG |
| ICS650G-40A | 功能描述:IC CLOCK ETHERNET SWITCH 16TSSOP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:- 产品变化通告:Product Discontinuation 04/May/2011 标准包装:96 系列:- 类型:时钟倍频器，零延迟缓冲器 PLL:带旁路 输入:LVTTL 输出:LVTTL 电路数:1 比率 - 输入:输出:1:8 差分 - 输入:输出:无/无 频率 - 最大:133.3MHz 除法器/乘法器:是/无 电源电压:3 V ~ 3.6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:管件 其它名称:23S08-5HPGG |
| ICS650G-40ALF | 功能描述:IC CLOCK ETHERNET SWITCH 16TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:- 产品变化通告:Product Discontinuation 04/May/2011 标准包装:96 系列:- 类型:时钟倍频器，零延迟缓冲器 PLL:带旁路 输入:LVTTL 输出:LVTTL 电路数:1 比率 - 输入:输出:1:8 差分 - 输入:输出:无/无 频率 - 最大:133.3MHz 除法器/乘法器:是/无 电源电压:3 V ~ 3.6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:管件 其它名称:23S08-5HPGG |
| ICS650G-40ALFT | 功能描述:IC CLOCK ETHERNET SWITCH 16TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:- 产品变化通告:Product Discontinuation 04/May/2011 标准包装:96 系列:- 类型:时钟倍频器，零延迟缓冲器 PLL:带旁路 输入:LVTTL 输出:LVTTL 电路数:1 比率 - 输入:输出:1:8 差分 - 输入:输出:无/无 频率 - 最大:133.3MHz 除法器/乘法器:是/无 电源电压:3 V ~ 3.6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:管件 其它名称:23S08-5HPGG |
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