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P2781 Datasheet General Purpose EMI Reduction IC

Manufacturer: onsemi

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Datasheet Details

Part number P2781
Manufacturer onsemi
File Size 177.81 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 other digital video and imaging applications.

The P278xA reduces electromagnetic interference (EMI) at the clock Applications 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 ModOUT www.DataSheet4U.com VSS ©2010 SCILLC.

Overview

P2781/82/84 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.
  • Ultra-low power CMOS design.
  • P278xA.

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