ASM3P2590A

www.DataSheet4U.com September 2006 rev 0.4 Low Power Peak EMI Reducing Solution Features Generates a 1X low EMI optimized clock signal at the output. Integrated loop filter components. Operates with a 3.3 / 2.5V Supply. Operating current less than 5mA. Low power CMOS design. Input frequency range 60MHz to 120MHz for 2.5V 60MHz to 120MHz for 3.3V Frequency deviation: ±0.75% (Typ) @85MHz Output frequency. Available in 6-pin TSOT-23 Package. ASM3P2590A The ASM3P2590A uses the most efficient and optimized modulation profile approved by the FCC and is implemented by using a proprietary all digital method. The ASM3P2590A 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 clock generation’. Applications The ASM3P2590A is targeted towards all portable devices with very low power requirements like MP3 players,MFP, LCD Panel Module and digital still cameras. Product Description The ASM3P2590A is a versatile spread spectrum frequency modulator designed specifically for a wide range of clock frequencies. The ASM3P2590A reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of all clock depend...