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ASM3P2111B - Peak EMI Reducing Solution

General Description

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

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

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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Datasheet Details

Part number ASM3P2111B
Manufacturer Alliance Semiconductor Corporation
File Size 243.53 KB
Description Peak EMI Reducing Solution
Datasheet download datasheet ASM3P2111B Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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May 2005 www.DataSheet4U.com ASM3P2111B Peak EMI Reducing Solution rev 0.1 Features ƒ ƒ ƒ Generates an EMI optimized clock at the output. Input frequency: 25 MHz. Frequency outputs: o o o ƒ ƒ ƒ ƒ ƒ 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 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.