The ASM3P2853A is a versatile spread spectrum frequency clock generator that reduces electromagnetic interference (EMI) at the clock source. This allows for significant system cost savings by reducing the number of circuit board layers and shielding that is required to pass EMI regulations. Spread spectrum clocking technology can virtually eliminate EMI filter networks and ferrite beads, with an added benefit that circuit board traces can be routed more effectively, enhancing design flexibility and layout.
The ASM3P2853A modulates the output of the PLL in order to spread the bandwidth of the 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.
"Spread Spectrum Clocking is definitely a good insurance policy," said Nelson Arata, product marketing manager for Alliance's Analog and Mixed Signal business unit. "Experienced designers know that EMI can be an 11th hour nightmare. Spread Spectrum capability will help the system designer sleep better knowing that his system has up to 6dB of additional EMI clearance."
Packaged in an 8 pin SOIC, the ASM3P2583A provides a 50 MHz Spread Spectrum clock and a Low Jitter 48 MHZ USB clock from a 25MHZ crystal source.
Samples are available today, with initial pricing set at $1.50 in 1K quantities. Full data sheet/product specifications are available online at www.alsc.com.
About Alliance:
Alliance Semiconductor Corporation (Nasdaq: ALSC) is powering every application with high performance solutions for the communications, computing and consumer electronics markets. Utilizing advanced process technologies and design expertise, Alliance provides leading OEMs with a broad portfolio of complementary technologies including analog and mixed-signal products, chip-to-chip connectivity products, networking controllers and high-performance memories. Alliance addresses the complete needs of system developers by leveraging its proprietary advances in Electromagnetic Interference (EMI) reduction, power management and timing technology, HyperTransport(TM) I/O connectivity and specialized memory solutions for next-generation applications. Founded in 1985, Alliance is headquartered in Santa Clara, Calif. with design centers in Bangalore and Hyderabad, India. The company is publicly traded and included in the S&P 600 Index. Additional information is available on the Alliance Web site at: http://www.alsc.com.
Contact:
Alliance Semiconductor Corporation, Santa Clara Nelson Arata, 408-855-4900 or PRESS CONTACT: Shelton Public Relations Katie Olivier, 972-239-5119 x128 Email Contact