P2042A

August 2005 rev 1.3 LCD Panel EMI Reduction IC Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ www.DataSheet4U.com P2042A wide reduction of EMI of down stream clock and data FCC approved method of EMI attenuation. Provides up to 15dB of EMI suppression. Generates a low EMI spread spectrum clock of the input frequency. Input frequency range: 30MHz to 110MHz. Optimized for 32.5MHz, 54MHz, 65MHz and 108MHz pixel clock frequencies. Internal loop filter minimizes external components and board space. Eight selectable high spread ranges up to ± 1.9%. SSON# control pin for spread spectrum enable and disable options. Low cycle-to-cycle jitter. 3.3V ± 0.3V operating range. Low power CMOS design. Supports most mobile graphic accelerator and LCD timing controller specifications. Available in 8-pin SOIC and TSSOP Packages. dependent signals. The P2042A allows significant system cost savings by reducing the number of circuit board layers ferrite beads, regulations. The P2042A uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method. The P2042A 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 clo...