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AD809:  155 MHz频率合成器

产品详情

AD809可以从19.44 MHz或9.72 MHz TTL/CMOS/ECL/PECL基准频率产生155.52 MHz ECL/PECL输出时钟。它支持分布式时序架构,能够将背板或PCB的19.44 MHz或9.72 MHz时序基准信号分配给多个155.52 Mbps端口。该器件可用来为一个或多个端口创建发送位时钟。

输入信号多路复用器支持环路定时应用,可从155.52 Mbps接收数据恢复155.52 MHz发送位时钟。

低抖动VCO、低功耗和宽工作温度范围,使该器件适合在环路系统中为SONET/SDH/光纤产生155.52 MHz位时钟。

该器件内置一个低成本、片内VCO,在输入频率为19.44 MHz或9.72 MHz时,可锁定至该频率的8倍或16倍。无需外部器件便可进行频率合成。不过,用户可以通过选择阻尼因子电容来调整环路动态特性,环路阻尼由阻尼因子电容的值决定。

AD809的设计可保证在输入端无信号时,时钟输出频率的漂移很低(约20%)。

AD809采用+5 V或-5.2 V单电源供电,功耗为90 mW。

特点和优势

  • 频率合成至155.52 MHz
  • 19.44 MHz或9.72 MHz输入
  • 基准信号选择复用
  • 单电源供电:+5 V或–5.2 V
  • 输出抖动:2.0度(均方根)
  • 低功耗:90 mW
  • 10 KH ECL/PECL兼容输出
  • 10 KH ECL/PECL/TTL/CMOS兼容输入
  • 封装:16引脚窄体150 Mil SOIC

AD809功能框图

文档

快讯名称 内容类型 文件类型
AD809: 155.52 MHz Frequency Synthesizer Data Sheet  (Rev A, 01/1997) (pdf, 282 kB) 产品数据手册 PDF
AN-349: 延长CMOS寿命的关键因素  (pdf, 326 kB)
本文介绍如何避免错误地使用CMOS
应用笔记 PDF
AN-349: Keys to Longer Life for CMOS  (pdf, 89 kB)
Here's How CMOS Can be Protected Against Abuse
应用笔记 PDF
Fundamentals of Frequency Synthesis, Part 2: Direct Digital Synthesis (DDS)
This month we conclude our two-part series on frequency synthesis, with an introduction to Direct Digital Synthesis. We will give a basic review of how a direct digital synthesis system works, touching on the inner workings of the DDS engine at a relatively high level. We will also discuss the tradeoffs between PLL and DDS technology as a base choice for frequency synthesis needs.
在线研讨会 WEBCAST
Phase-Locked Loops for High-Frequency Receivers and Transmitters - Part 2  (pdf, 107 kB) 技术文章 PDF
Phase Locked Loops for High-Frequency Receivers and Transmitters – Part 1  (pdf, 68 kB) 技术文章 PDF
Phase Locked Loops for High-Frequency Receivers and Transmitters – Part 3  (pdf, 76 kB) 技术文章 PDF
RF 手册  (pdf, 988 kB)
RF IC 选型指南(12/2010)
概况 PDF
PLLs/Synthesizers Product Highlight  (pdf, 269 kB) 概况 PDF
PLL Synthesizers/VCOs - Overview  (pdf, 510 kB) 概况 PDF
Clock and Timing ICs  (pdf, 4970 kB) 概况 PDF
Why do I see reference spurs? 常见问题解答 HTML
Why is my phase noise shape changing when I change the PLL settings? 常见问题解答 HTML
Why doesn't the PLL make my reference input and the clock outputs line up? 常见问题解答 HTML
How do I optimize my PLL loop for the best phase noise and/or jitter? 常见问题解答 HTML
My loop is not locking. How do I debug this? 常见问题解答 HTML
How long does it take for the PLL to lock? 常见问题解答 HTML
Help! My PLL came unlocked over temperature. 常见问题解答 HTML
How do I choose between active and passive filter in PLL loop? 常见问题解答 HTML
Should I reference the passive filter to ground? or supply? 常见问题解答 HTML
How do the PLLs in the AD951x parts compare to other ADI PLLs? 常见问题解答 HTML
How does the clock clean-up function of the AD951x parts work? 常见问题解答 HTML
Why do I want to run a fast PFD frequency? 常见问题解答 HTML
Is it ok for me to connect the same power supply to both the charge pump and distribution power supply pins? 常见问题解答 HTML
Why can't I use a bandpass filter for my loop filter? 常见问题解答 HTML
Should I tie my loop filter to ground or PLL supply? 常见问题解答 HTML
The loop filter was working great until I changed the divide ratio in PLL. What happened? 常见问题解答 HTML
How do I use a VCO with a supply greater than 5V? 常见问题解答 HTML
What suppliers do you recommend for VCO/VCXOs? 常见问题解答 HTML
Do VCXOs have better phase noise and jitter performance than VCOs? 常见问题解答 HTML
How do I know which VCO will work best with the AD9510? 常见问题解答 HTML
Is there an advantage to running a higher VCO frequency than the output frequency? 常见问题解答 HTML
How do I determine if a VCO is good enough for my purpose? 常见问题解答 HTML
Is there any difference between the nature of an oscillator's phase noise and the phase noise from a clock chip? 常见问题解答 HTML
Do different divide ratios cause variations in jitter? 常见问题解答 HTML
I have a clocking scheme which requires several different division ratios simultaneously. I have a frequency plan, but I'm concerned about crosstalk. How much of a problem is this with your clock distribution chips? 常见问题解答 HTML
Do divide ratios change the propagation delay? 常见问题解答 HTML
I want to use the phase offset feature on the AD9510 dividers to generate two signals 90° out of phase. How accurate is the phase offset? 常见问题解答 HTML
On the AD951x clock ICs, does the phase offset (coarse delay) affect the jitter? 常见问题解答 HTML
Why doesn't the mini-divider support the divide ratio I want? 常见问题解答 HTML
I want to use the variable delay adjust, but the jitter is too high. What can I do? 常见问题解答 HTML
I changed the coarse phase adjust in the evaluation software, but nothing happened. What's going on? 常见问题解答 HTML
What is the difference between the coarse phase adjust and the fine delay adjust? 常见问题解答 HTML
What is the fine delay adjust which is available on certain LVDS/CMOS outputs? 常见问题解答 HTML
Does the fine delay adjust affect the jitter? 常见问题解答 HTML
Why is the fine delay adjust not available on all the outputs? 常见问题解答 HTML
Is there a way to cause Input/Output rising edges to be synchronous (zero delay) with the AD9510/11? 常见问题解答 HTML
Will the AD9510 work without a reference input signal? 常见问题解答 HTML
What are the best clock sources for a distribution-only design? 常见问题解答 HTML
I am not using the CLK1 input on the AD9510. Can I just leave it floating? 常见问题解答 HTML
How good does my input signal need to be? 常见问题解答 HTML
I turned off my reference but the Digital Lock Detect (DLD) still says I'm locked. 常见问题解答 HTML
Can I shift the threshold on clocks for single-ended inputs? 常见问题解答 HTML
The reference input is differential, but my reference is single-ended. Do I need to convert to differential to drive the AD9510? 常见问题解答 HTML
Will differential or single-ended inputs/outputs improve my jitter? 常见问题解答 HTML
Why should I use differential rather than single-ended? 常见问题解答 HTML
How do I feed a single-ended signal into a differential input? 常见问题解答 HTML
Why do you recommend AC coupling, rather than DC coupling, at the clock inputs? 常见问题解答 HTML
Are the ADI clock parts stand-alone clock sources or do I still have to buy a clock source to drive these parts? 常见问题解答 HTML
Which provides better performance - a clock source with sinewave output, or one with differential square wave outputs? 常见问题解答 HTML
On the AD9510, what is the relationship between clock output jitter and CLK1/CLK2 input slew rate? 常见问题解答 HTML
I'm trying to write to the part in single-byte mode, but I can't write anything. What am I doing wrong? 常见问题解答 HTML
Can I use the 951X clocks to drive a mixer (RF LO)? 常见问题解答 HTML
My applications are RF, not for clocking data converters. Can ADI's 951X ICs be used for RF applications? 常见问题解答 HTML
I have an input present at the clock input, but I'm not seeing an output? 常见问题解答 HTML
What happens to the AD9510/11 clock outputs if the Reference Input (REFIN) signal goes away? 常见问题解答 HTML
What clock frequency comes out of the AD9510 outputs when you first apply power to the device? 常见问题解答 HTML
Is it possible to impedance match a clock output if it is heavily loaded? (e.g. CL=100pF) 常见问题解答 HTML
I ran the AD9510 outputs at 1.4 GHz and they seem to work fine. Is there a problem running them at 1.4 GHz? 常见问题解答 HTML
What should I do with unused channels on the AD9510? 常见问题解答 HTML
Can I tri-state the AD9510 outputs? 常见问题解答 HTML
On the AD9510, how can I make sure that the duty cycle of output clocks stays within 40% to 60% duty cycle window? 常见问题解答 HTML
What is the effect of distributing harmonically related clocks (on chip or on board) in terms of jitter? 常见问题解答 HTML
Is there any reason to use a transformer on a differential clock output to obtain a "clean" single-ended clock output? 常见问题解答 HTML
What are some of the advantages/disadvantages of using LVPECL vs. LVDS outputs? 常见问题解答 HTML
Does the AD9510 support 2.5V PECL? 常见问题解答 HTML
How much bandwidth is required to process a PECL or LVDS output? 常见问题解答 HTML
If I use only one of the PECL differential outputs and the unused output is terminated in 50Ω, how will this affect the phase noise or jitter of the single-ended output? 常见问题解答 HTML
If I change the level of PECL output, does it affect the jitter? 常见问题解答 HTML
What is the best way to terminate LVPECL outputs to get lowest jitter? 常见问题解答 HTML
Is it okay to AC-couple PECL or LVDS outputs? 常见问题解答 HTML
What is the fan-out capability of the CMOS, LVDS, and LVPECL outputs? 常见问题解答 HTML
What is the proper termination (value and location) for outputs? 常见问题解答 HTML
Are outputs short-circuit protected? 常见问题解答 HTML
Are the CMOS drivers on the clock devices complementary? 常见问题解答 HTML
Some of the schematics in the AD951x data sheets show an LVPECL termination scheme which is different from the classic termination often seen (50 Ω to Vs - 2V, or the Thevenin equivalent thereof). How does this work, and how did you chose 200 Ω for the resistors? Can I use 100 ohms to improve the slew rate (or jitter)? 常见问题解答 HTML
I have pulled SYNCB low, but I still have output from a channel. Why? 常见问题解答 HTML
Why can I not get the same output amplitude or rise and fall times as stated in your datasheet? 常见问题解答 HTML
The AD9510 datasheet says to use an external pull-up resistor on the FUNCTION pin. Why do I need this and what range of resistors will work? 常见问题解答 HTML
May I use the AD9540 for spread spectrum clocking? 常见问题解答 HTML
Can I get two clock outputs from the AD9540? 常见问题解答 HTML
What's the advantage of a DDS-based clock generator? 常见问题解答 HTML
Why does the AD9540 require special filtering on its analog output. What are the requirements of this filter? 常见问题解答 HTML
I'm working with optical networks - SONET/SDH. Do ADI's clock chips support these applications? 常见问题解答 HTML
On my board, I can't get the same low jitter numbers that are shown in the datasheet. Am I doing something wrong? 常见问题解答 HTML
How do you determine the bandwidth over which phase noise is integrated to obtain jitter? 常见问题解答 HTML
Using the "ADC SNR method", what is the equivalent bandwidth for the jitter specification? 常见问题解答 HTML
How do harmonic spurs in the output spectrum affect jitter (random or deterministic)? 常见问题解答 HTML
When a jitter number is specified without an associated bandwidth, what bandwidth should be assumed? 常见问题解答 HTML
How do you specify jitter? 常见问题解答 HTML
How do I use the clock part for jitter clean-up? 常见问题解答 HTML
If jitter can be calculated from phase noise measurements, is it possible to calculate phase noise from jitter numbers? 常见问题解答 HTML
Does jitter vary with different clock frequencies? How about phase noise? 常见问题解答 HTML
I sure can't measure jitter with femtosecond resolution on my scope! How do you do it? How much confidence do you have in the jitter figures that you are quoting for these parts? 常见问题解答 HTML
Do you guarantee performance shown in ADIsimCLK? 常见问题解答 HTML
Who do I contact for technical support on ADIsimCLK? 常见问题解答 HTML
Should I use the minimum charge pump current settings in order to minimize power? 常见问题解答 HTML
Can I run CMOS outputs at 5V? 常见问题解答 HTML
Can I use different power supply voltages for the PECL output drivers? 常见问题解答 HTML
Is .01 uF sufficient for power supply pin bypass? 常见问题解答 HTML
My application has pretty tight power consumption requirements. I am very interested in the capabilities of the AD9510, but I don't need every feature. Is it possible to turn off the unused features and save power? 常见问题解答 HTML
Why don't you spec psrr and cmrr in the datasheet? 常见问题解答 HTML
How do I get two AD951x (with PLL) to synchronize to the same reference input edge? 常见问题解答 HTML
I really need >10 clock outputs. Can I use multiple chips together and still guarantee that all output clocks are synchronized to REFIN? 常见问题解答 HTML
How do I synchronize multiple clock devices? 常见问题解答 HTML
What happens if I run the part in an ambient environment which exceeds 85°C? 常见问题解答 HTML
How can I determine the die temperature of your device? 常见问题解答 HTML
My circuit board has both an analog GND and a digital GND. How should I connect the AD9510 pins labeled GND? 常见问题解答 HTML
What PCB layout recommendations do you have for the of the exposed paddle on the bottom side of the LFCSP package? 常见问题解答 HTML
What is a PLL Synthesizers and how is it used? 常见问题解答 HTML
RAQs index 非常见问题解答 HTML
术语表 专业词汇表 HTML

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Sample样片申请及购买

价格,封装及供货状态

AD809 型号选项
产品型号 封装 引脚 温度范围 包装和数量 报价*(100-499) 报价*1000 pcs RoHS 查看PCN/PDN 查看库存/
购买/样片
AD809BR-REEL7 产品状态: 量产 16 ld SOIC 16 工业 Reel, 1000 $ 5.61 $ 4.44 N  材料信息 查看PCN 订购
AD809BRZ 产品状态: 量产 16 ld SOIC 16 工业 Tube, 48 $ 4.86 $ 3.85 Y  材料信息 查看PCN 订购 样片
AD809BRZ-REEL 产品状态: 最后订购时间 16 ld SOIC 16 工业 Reel, 2500 $ 4.86 $ 3.85 Y  材料信息 查看PCN/PDN 订购
AD809BRZ-REEL7 产品状态: 量产 16 ld SOIC 16 工业 Reel, 1000 $ 4.86 $ 3.85 Y  材料信息 查看PCN 订购
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