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ASM3P2111B Datasheet Peak Emi Reducing Solution

Manufacturer: Alliance Semiconductor Corporation

Overview: May 2005 .. ASM3P2111B Peak EMI Reducing Solution rev 0.1.

General Description

The ASM3P2111B is a versatile spread spectrum frequency modulator that reduces electromagnetic interference (EMI) at the clock source.

The ASM3P2111B high speed digital applications such as PC peripheral devices, consumer electronics and embedded controller systems.

Block Diagram VDD XIN /CLKIN XOUT 60 MHz Crystal Oscillator PLL1 48 MHz_1 48 MHz_2 48 MHz_1 PLL2 66.6 MHz Modulated VSS Alliance Semiconductor 2575 Augustine Drive • Santa Clara CA • Tel: 408-855-4900 • Fax: 408-855-4999 • .alsc.

Key Features

  • Generates an EMI optimized clock at the output. Input frequency: 25 MHz. Frequency outputs: o o o.
  • 60 MHz (unmodulated) 2 x 48 MHz (unmodulated) 66.6 MHz (modulated): -1.7% down spread allows significant system cost savings by reducing the number of circuit board layers and shielding that are required to pass EMI regulations. The ASM3P2111B modulates the output of PLL in order to spread the bandwidth of a synthesized clock, thereby decreasing the p.

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ASM3P2111B Distributor