参数资料
| 型号： | SM840004-11KA TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK SYNTHESIZER LN 20TSSOP |
| 产品培训模块： | High Bandwidth Product Overview |
| 标准包装： | 1,000 |
| 系列： | RotaryWave™ |
| 类型： | 时钟/频率合成器 |
| PLL： | 是 |
| 主要目的： | 以太网 |
| 输入： | 晶体 |
| 输出： | LVCMOS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:4 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 125MHz |
| 电源电压： | 2.375 V ~ 3.465 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 带卷 (TR) |
SM840004-11
62.5/125MHz Gigabit Ethernet, 4 Output,
Ultra-Low Jitter Clock Synthesizer
RotaryWave is a trademark of Multigig, Inc.
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (
408) 944-0800 fax + 1 (408) 474-1000 http://www.micrel.com
July 2010
M9999-070110-A
hbwhelp@micrel.com or (408) 955-1690
General Description
The SM840004-11 clock synthesizer was designed for
Gigabit Ethernet applications. The device design is
optimized for 62.5MHz and 125MHz using a standard
25MHz fundamental parallel resonant crystal, with
unparalleled stability and accuracy over the full operating
range, and provides an easy fit for Jitter and Phase Noise
standards for these high performance interfaces.
The SM840004-11 design includes a unique power
reduction
methodology,
along
with
a
patented
RotaryWave architecture, that provides a stable clock
with very low noise for optimized performance. This yields
an overall improved Bit Error Rate (BER) and improved
waveform integrity.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
Generates 4 optimized LVCMOS clock outputs
RMS phase jitter @ 125MHz: ~55 fs (typ)
Integrated loop filter components
Operates with either a 3.3V or 2.5V supply
Power consumption 65mA (typ @ 2.5V)
Selectable output frequency: 125MHz or 62.5MHz
Input frequency of 25MHz
Fundamental parallel resonant crystal interface
Pin compatible with the ICS/IDT840004-11
Industrial temperature range: –40°C to +85°C
Green, RoHS-compliant and PFOS-compliant
___________________________________________________________________________________________________________
Block Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SM840021 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:125MHz Ultra-Low Jitter Clock Synthesizer |
| SM840021KA | 功能描述:时钟合成器/抖动清除器 125MHz Ultra Low Clock Synthesizer RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| SM840021KA TR | 功能描述:时钟合成器/抖动清除器 125MHz Ultra Low Clock Synthesizer RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| SM840051 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:10 Gigabit Ethernet Ultra-Low Jitter Clock Synthesizer |
| SM840051KA | 功能描述:时钟合成器/抖动清除器 77, 78, 155, 156 MHz Ultra Low Clock Synthesizer RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
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