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NB2870A: 3.3 V / 2.5 V Low Power, Reduced EMI Clock Synthesizer

Datasheet: Low Power, Reduced EMI Clock Synthesizer
Rev. 4 (159.0kB)
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Product Overview
产品说明
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.
特性
 
  • Generates an EMI Optimized Clocking Signal at the Output
  • Integrated Loop Filter Components
  • Operates with a 3.3V / 2.5V Supply
  • Operating Current typically less than 4.0 mA
  • Low Power CMOS Design
  • Input Frequency Range: 13MHz to 30MHz
  • Generates a 1X Low EMI Spread Spectrum clock of the Input Frequency
  • Frequency Deviation 0.75% at 22MHz
  • Available in TSOP-6 Package (TSOT-23-6)
  • Pb-Free Package is Available
应用
  • ElectroMagnetic Interference reduction in portable and consumer applications.
  • Reduction of system clock noise to meet FCC regulations.
技术文档及设计资源
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产品 状况 Compliance 简短说明 行动
EMITSOP6EVB Intro Pending
NB2XXXA EMI Evaluation Board
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NB2870ASNR2G Consult Sales Office
Pb-free
3.3 V / 2.5 V Low Power, Reduced EMI Clock Synthesizer TSOP-6 318G-02 1 Tape and Reel 2500  
NB2870ASNR2 Obsolete
3.3 V / 2.5 V Low Power, Reduced EMI Clock Synthesizer TSOP-6 318G-02 1 Tape and Reel 2500  
表面贴装器件的潮湿敏感度等级(MSL)(260°C回流温度时测量无铅,235°C回流温度时测量含铅)
市场订货至交货的时间(周) : Contact Factory
市场订货至交货的时间(周) : Contact Factory
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