器件名称: I2560BG-08ST
功能描述: Low Frequency EMI Reduction
文件大小: 328.6KB 共8页
简 介:October 2006 rev 1.3 Low Frequency EMI Reduction
Features
FCC approved method of EMI attenuation Generates a low EMI spread spectrum and a non spread reference signal of the input clock frequency Optimized for input frequency range from 20 to 32MHz Internal loop filter minimizes external components and board space Two selectable spread ranges 3.3V Operating Voltage Ultra low power CMOS design: 5.50 mA @3.3V Supports notebook VGA and other LCD timing controller applications Available in 8-pin SOIC and TSSOP
P2560B
circuit board layers and shielding traditionally required to pass EMI regulations. The P2560B modulates the output of a single 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. The P2560B uses the most efficient and optimized modulation profile approved by the FCC and is implemented by using a proprietary all-digital method.
Applications Product Description
The P2560B is a versatile spread spectrum frequency modulator designed specifically for a wide range of clock frequencies. It reduces electromagnetic interference (EMI) at the clock source allowing system-wide reduction of EMI of downstream clock and data dependent signals. It allows significant system cost……
