器件名称: I2040AF-08-TT
功能描述: LCD Panel EMI Reduction IC
文件大小: 354.38KB 共9页
简 介:October 2005 rev 1.2 LCD Panel EMI Reduction IC
Features
FCC approved method of EMI attenuation. Provides up to 20dB of EMI suppression. Generates a low EMI spread spectrum clock of the input frequency. Input frequency range: 30MHz to 100MHz. Optimized for VGA, SVGA, and higher resolution XGA LCD Panels. Internal loop filter minimizes external components and board space. Six selectable high spread ranges up to ± 2%. Two selectable modulation rates. SSON# control pin for spread spectrum enable and disable options. Low cycle-to-cycle jitter. Wide operating range. Low power CMOS design. Supports most mobile graphic accelerator specifications. Products available for automotive temperature range. (Refer Spread Spectrum Range Selection Tables) applications. The P2040A reduces
P2040A
electromagnetic
interference (EMI) at the clock source, allowing system wide reduction of EMI of down stream clock and data dependent signals. The P2040A allows significant system cost savings by reducing the number of circuit board layers ferrite beads, regulations. The P2040A uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method. The P2040A 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 osci……
