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P2781 Datasheet General Purpose EMI Reduction IC

Manufacturer: Alliance Semiconductor

Datasheet Details

Part number P2781
Manufacturer Alliance Semiconductor
File Size 200.04 KB
Description General Purpose EMI Reduction IC
Download P2781 Download (PDF)

General Description

The P278xA is a versatile spread spectrum frequency modulator designed specifically for digital camera and The P278xA is targeted towards MFP, xDSL, fax modem, set-top box, USB controller, DSC, and embedded systems.

Block Diagram FS0 FS1 LF VDD PLL Modulation XIN /CLKIN XOUT Crystal Oscillator Frequency Divider Feedback Divider Phase Detector VCO Output Divider www.DataSheet4U.com ModOUT VSS Alliance Semiconductor 2575, Augustine Dri

Overview

July 2005 rev 1.5 General Purpose EMI Reduction IC.

Key Features

  • Provides up to 15dB of EMI suppression FCC approved method of EMI attenuation Generates a 1X, 2X, and 4X low EMI spread spectrum clock of the input frequency Input frequency range from 3 to 78MHz External loop filter for spread % adjustment Spreading ranges from ±0.25% to ±5.0% Ultra low cycle-to-cycle jitter Zero-cycle slip 3.3V operating voltage range 10 mA output drives TTL or CMOS compatible outputs Ultra-low.