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參數(shù)資料
| 型號： | NB2870A |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Low Power, Reduced EMI Clock Synthesizer(低功率,降低EMI時鐘合成器) |
| 中文描述： | 低功耗，降低EMI時鐘合成器（低功率，降低電磁干擾時鐘合成器） |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 116K |
| 代理商： | NB2870A |
Semiconductor Components Industries, LLC, 2006
December, 2006
Rev. 3
1
Publication Order Number:
NB2870A/D
NB2870A
Low Power, Reduced EMI
Clock Synthesizer
The NB2870A is a versatile spread spectrum frequency modulator
designed specifically for a wide range of clock frequencies. The
NB2870A reduces ElectroMagnetic Interference (EMI) at the clock
source, allowing system wide reduction of EMI of all clock dependent
signals. The NB2870A allows significant system cost savings by
reducing the number of circuit board layers, ferrite beads and
shielding that are traditionally required to pass EMI regulations.
The NB2870A uses the most efficient and optimized modulation
profile approved by the FCC and is implemented by using a
proprietary all digital method.
The NB2870A modulates the output of a single PLL in order to
“spread” the bandwidth of a synthesized clock, and more importantly,
decreases the peak amplitudes of its harmonics. This results in
significantly lower system EMI compared to the typical narrow band
signal produced by oscillators and most frequency generators.
Lowering EMI by increasing a signal’s bandwidth is called ‘spread
spectrum clock generation’.
The NB2870A is targeted towards all portable devices with very
low power requirements like MP3 players, Notebooks and digital still
cameras.
Features
Generates an EMI Optimized Clocking Signal at the Output
Integrated Loop Filter Components
Operates with a 3.3 V / 2.5 V Supply
Operating Current less than 4.0 mA
Low Power CMOS Design
Input Frequency Range: 13 MHz to 30 MHz
Generates a 1X Low EMI Spread Spectrum clock of the Input
Frequency
Frequency Deviation
0.75% (TYP) @ 22 MHz
Available in TSOP
6 Package (TSOT
23
6)
Pb
Free Package is Available
1
6
*For additional marking information, refer to
Application Note AND8002/D.
TSOP
6
(TSOT
23
6)
SN SUFFIX
CASE 318G
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
ORDERING INFORMATION
http://onsemi.com
MARKING
DIAGRAM*
E09 = Specific Device Code
A
= Assembly Location
Y
= Year
W
= Work Week
= Pb
Free Package
XXXAYW
1
(Note: Microdot may be in either location)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NB2870ASNR2 | 功能描述:時鐘合成器/抖動清除器 2.5V/3.3V Low Power RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| NB2870ASNR2G | 功能描述:時鐘合成器/抖動清除器 HF - EMI REDUCER RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| NB2872A | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Low Power, Reduced EMI Clock Synthesizer |
| NB2872ASNR2 | 功能描述:時鐘合成器/抖動清除器 2.5V/3.3V Low Power RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| NB2872ASNR2G | 功能描述:時鐘合成器/抖動清除器 HF - EMI REDUCER RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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