P2781 Datasheet - Alliance Semiconductor

P2781 General Purpose EMI Reduction IC

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.

P2781 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

P2781_AllianceSemiconductor.pdf