参数资料
| 型号： | SM840021KA TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK SYNTHESIZER 8TSSOP |
| 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 |
| 输入： | 晶体 |
| 输出： | LVCMOS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:1 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 125MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 2.375 V ~ 3.465 V |
| 工作温度： | -40°C ~ 75°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
SM840021
125MHz Ultra-Low Jitter Clock Synthesizer
RotaryWave is a registered 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
March 2010
M9999-031810-B
hbwhelp@micrel.com or (408) 955-1690
General Description
The SM840021 synthesizer was designed for Ethernet
applications. This clock synthesizer is optimized for
125MHz using a standard 25MHz fundamental parallel
resonant crystal, with unparalleled stability and accuracy
over the full operating range. The SM840021 design
includes a unique power reduction methodology, along
with a patented RotaryWave
TM architecture that provides a
very stable clock with very low noise for optimized
performance yielding 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 an optimized 125MHz LVCMOS Output
Integrated loop filter components
RMS Phase Jitter: 250 fs (typ)
Operates with either a 3.3V or 2.5V supply
Power consumption is <77mA @ 3.3V
Input frequency: 25MHz parallel resonant crystal
Output frequency: 125MHz
Temperature range: –40°C to +75°C
Green, RoHS-compliant and PFOS-compliant
Available in 8-pin TSSOP package
Applications
Gigabit Ethernet
Datacom/Telecom
Ethernet Switch
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Block Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| SM840051KA TR | 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 |
| SM840051KATR | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:10 Gigabit Ethernet Ultra-Low Jitter Clock Synthesizer |
| SM840B | 制造商:SECOS 制造商全称:SeCoS Halbleitertechnologie GmbH 功能描述:8.0 AMP Surface Mount Schottky Barrier Rectifiers |
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