P2779A Datasheet Low-Cost Notebook EMI Reduction

Manufacturer: Alliance Semiconductor

P2779A low-cost notebook emi reduction by Alliance Semiconductor - Datasheet Preview

Datasheet Details

Part number	P2779A
Manufacturer	Alliance Semiconductor
File Size	60.91 KB
Description	Low-Cost Notebook EMI Reduction
Datasheet	P2779A Datasheet

General Description

The P2779A is a versatile spread spectrum frequency modulator designed specifically for mobile and digital camera and other digital video and imaging applications.

The P2779A reduces electromagnetic interference (EMI) at the clock source, which provides system-wide reduction of EMI of all clock dependent signals.

The P2779A allows significant system cost savings by reducing the number of circuit board layers and shielding that are traditionally required to pass EMI regulations.

Overview

Production February 2003 ® P2779A Low-Cost Notebook EMI Reduction.

Key Features

Provides up to 15 dB of EMI suppression FCC approved method of EMI attenuation Generates a 1X low EMI spread spectrum clock of the input frequency Operates between 20MHz and 38MHz input frequency range External loop filter for spread percentage adjustment Spreading ranges from ±0.25% to ±2.5%.
Ultra low cycle-to-cycle jitter Zero-cycle slip at small deviation.

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