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参数资料
| 型号： | ADN2817ACPZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/40页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK/DATA RECOVERY 32-LFCSP |
| 标准包装： | 1,500 |
| 类型： | 时钟和数据恢复（CDR），多路复用器 |
| PLL： | 是 |
| 主要目的： | SONET/SDH |
| 输入： | CML |
| 输出： | CML |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:2 |
| 差分 - 输入:输出： | 是/是 |
| 频率 - 最大： | 2.7GHz |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-VQ（5x5） |
| 包装： | 带卷 (TR) |
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Data Sheet
ADN2817/ADN2818
Rev. E | Page 21 of 40
At medium jitter frequencies, the gain and tuning range of the
VCO are not large enough to track input jitter. In this case, the
VCO control voltage becomes large and saturates, and the VCO
frequency dwells at one extreme of its tuning range or the other.
The size of the VCO tuning range, therefore, has only a small
effect on the jitter accommodation. The delay-locked loop control
voltage is now larger, and so the phase shifter takes on the
burden of tracking the input jitter. The phase shifter range, in
UI, can be seen as a broad plateau on the jitter tolerance curve.
The phase shifter has a minimum range of 2 UI at all data rates.
The gain of the loop integrator is small for high jitter frequencies,
so that larger phase differences are needed to make the loop
control voltage big enough to tune the range of the phase shifter.
Large phase errors at high jitter frequencies cannot be tolerated.
In this region, the gain of the integrator determines the jitter
accommodation. Because the gain of the loop integrator declines
linearly with frequency, jitter accommodation is lower with higher
jitter frequency. At the highest frequencies, the loop gain is very
small, and little tuning of the phase shifter can be expected. In this
case, jitter accommodation is determined by the eye opening of the
input data, the static phase error, and the residual loop jitter
generation. The jitter accommodation is roughly 0.5 UI in this
region. The corner frequency between the declining slope and
the flat region is the closed-loop bandwidth of the delay-locked
loop, which is roughly 3 MHz at OC-48.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADN2817XCPX | 制造商:Analog Devices 功能描述:CONTINUOUS RATE 12.3MB/S TO 2.7GB/S CLOCK AND DATA RECOVERY - Trays |
| ADN2817XCPZ | 制造商:Analog Devices 功能描述:CONTINUOUS RATE 12.3MB/S TO 2.7GB/S CLOCK AND DATA RECOVERY - Gel-pak, waffle pack, wafer, diced wafer on film |
| ADN2818 | 制造商:AD 制造商全称:Analog Devices 功能描述:Continuous Rate 12.3Mb/s to 2.7Gb/s Clock and Data Recovery ICs |
| ADN2818ACP | 制造商:AD 制造商全称:Analog Devices 功能描述:Continuous Rate 12.3Mb/s to 2.7Gb/s Clock and Data Recovery ICs |
| ADN2818ACP-RL | 制造商:AD 制造商全称:Analog Devices 功能描述:Continuous Rate 12.3Mb/s to 2.7Gb/s Clock and Data Recovery ICs |
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