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| 型号： | AD9516-1/PCBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 77/80页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD9516-1 |
| 产品培训模块： | Active Filter Design Tools |
| 设计资源： | AD9516 Eval Brd Schematic AD9516 Gerber Files AD9516-1 BOM |
| 标准包装： | 1 |
| 主要目的： | 计时，时钟发生器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | AD9516-1 |
| 主要属性： | 2 输入，14 输出，2.5GHz VCO |
| 次要属性： | CMOS、LVDS、LVPECL 输出逻辑，ADIsimCLK&trade 图形用户界面 |
| 已供物品： | 板，线缆，电源 |
| 产品目录页面： | 776 (CN2011-ZH PDF) |
| 相关产品： | AD9516-1BCPZ-REEL7-ND - IC CLOCK GEN 2.5GHZ VCO 64-LFCSP AD9516-1BCPZ-ND - IC CLOCK GEN 2.5GHZ VCO 64-LFCSP |
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Data Sheet
AD9516-1
Rev. C | Page 79 of 80
CMOS CLOCK DISTRIBUTION
The AD9516 provides four clock outputs (OUT6 to OUT9)
that are selectable as either CMOS or LVDS level outputs.
When selected as CMOS, each output becomes a pair of CMOS
outputs, each of which can be individually turned on or off and
set as noninverting or inverting. These outputs are 3.3 V CMOS
compatible.
Whenever single-ended CMOS clocking is used, some of the
following general guidelines should be used.
Point-to-point nets should be designed such that a driver has
only one receiver on the net, if possible. This allows for simple
termination schemes and minimizes ringing due to possible
mismatched impedances on the net. Series termination at the
source is generally required to provide transmission line
matching and/or to reduce current transients at the driver.
The value of the resistor is dependent on the board design and
timing requirements (typically 10 to 100 is used). CMOS
outputs are also limited in terms of the capacitive load or trace
length that they can drive. Typically, trace lengths less than
3 inches are recommended to preserve signal rise/fall times and
preserve signal integrity.
CMOS
10
60.4
(1.0 INCH)
MICROSTRIP
06420-
076
Figure 75. Series Termination of CMOS Output
Termination at the far-end of the PCB trace is a second option.
The CMOS outputs of the AD9516 do not supply enough
current to provide a full voltage swing with a low impedance
resistive, far-end termination, as shown in Figure 76. The far-
end termination network should match the PCB trace impedance
and provide the desired switching point. The reduced signal
swing may still meet receiver input requirements in some
applications. This can be useful when driving long trace
lengths on less critical nets.
CMOS
10
50
100
VS
06420-
077
Figure 76. CMOS Output with Far-End Termination
Because of the limitations of single-ended CMOS clocking,
consider using differential outputs when driving high speed
signals over long traces. The AD9516 offers both LVPECL and
LVDS outputs that are better suited for driving long traces
where the inherent noise immunity of differential signaling
provides superior performance for clocking converters.
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相关代理商/技术参数 |
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|---|---|
| AD9516-1XCPZ | 制造商:Analog Devices 功能描述:14-CHANNEL CLOCK GENERATOR WITH INTEGRATED 2.8 GHZ VCO - Bulk |
| AD9516-2 | 制造商:AD 制造商全称:Analog Devices 功能描述:14-Output Clock Generator with Integrated 2.2 GHz VCO |
| AD9516-2/PCBZ | 功能描述:BOARD EVAL FOR AD9516-2 2.2GHZ RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
| AD9516-2BCPZ | 功能描述:IC CLOCK PLL/VCO 2.2GHZ 64LFCSP 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:- 标准包装:2,000 系列:- 类型:PLL 时钟发生器 PLL:带旁路 输入:LVCMOS，LVPECL 输出:LVCMOS 电路数:1 比率 - 输入:输出:2:11 差分 - 输入:输出:是/无 频率 - 最大:240MHz 除法器/乘法器:是/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:32-LQFP 供应商设备封装:32-TQFP（7x7） 包装:带卷 (TR) |
| AD9516-2BCPZ-REEL7 | 功能描述:IC CLOCK PLL/VCO 2.2GHZ 64LFCSP 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:- 标准包装:2,000 系列:- 类型:PLL 时钟发生器 PLL:带旁路 输入:LVCMOS，LVPECL 输出:LVCMOS 电路数:1 比率 - 输入:输出:2:11 差分 - 输入:输出:是/无 频率 - 最大:240MHz 除法器/乘法器:是/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:32-LQFP 供应商设备封装:32-TQFP（7x7） 包装:带卷 (TR) |
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