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ASM3P2853A

器件名称: ASM3P2853A
功能描述: Peak EMI Reducing Solution
文件大小: 160.17KB    共8页
生产厂商: PULSECORE
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简  介:November 2006 rev 1.3 Peak EMI Reducing Solution Features Generates an EMI optimized clock signal at output. Input frequency: 25MHz. Frequency outputs: USB Clock (48MHz unmodulated) 50MHz (modulated), ±1% centre spread Modulation rate: 39KHz. Spread Spectrum ON/OFF control Supply voltage range 2.5V ± 5%. Available in 8 Pin SOIC package. Commercial and Industrial Temperature range. ASM3P2853A shielding that are required to pass EMI regulations. The ASM3P2853A modulates the output of PLL in order to spread the bandwidth of a synthesized clock, thereby decreasing 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 clock generators. Lowering EMI by increasing a signal’s bandwidth is called spread spectrum clock generation. Applications ASM3P2853A is targeted towards EMI management for high speed digital applications such as PC peripheral devices, consumer electronics and embedded controller systems. Product Description The ASM3P2853A is a versatile spread spectrum frequency modulator. The ASM3P2853A reduces electromagnetic interference (EMI) at the clock source. The ASM3P2853A allows significant system cost savings by reducing the number of circuit board layers and Block Diagram VDD PWDNB XIN XOUT Crystal Oscillator PLL1 USB Clock (48MHz Unmodulated) SSONB PLL2 50MHz Modulated VSS PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200, Cam……
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