PCS3I2189A

May 2008 rev 0.2 Spread Spectrum Clock Generator PCS3P2189A www.DataSheet4U.com Product Description Features Generates a 4X low EMI spread spectrum clock of the input frequency. Input frequency: 10MHz - 25MHz Output frequency: 40MHz - 100MHz Internal loop filter minimizes external components and board space. Selectable Centre Spread frequency deviation: ±0.5%, ± 1.0%, ± 1.5%, ± 2.0% Supply Voltage :3.3V ± 0.3V Commercial and Industrial temperature range 8-pin TSSOP Package Low power CMOS process PCS3P2189A is a versatile spread spectrum frequency modulator that generates a low EMI 4x clock at the output. PCS3P2189A offers four spread Spread options of Deviation Selection selectable centre PCS3P2189A all ±0.5%,±1.0%,±1.5%,±2.0%,(Refer Tabnle). reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of clock dependent signals. The PCS3P2189A 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. PCS3P2189A has spread spectrum ON/OFF option. The PCS3P2189A uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method. Application PCS3P2189A is targetted for LCD panel application Block Diagram S0 S1 SSON VDD PLL Modulation CLKIN / XIN XOUT Crystal Oscillator Frequency Divider Feedback Divider Phase Detector Loop Filter...