器件名称: I2814A-08ST
功能描述: Low-Power EMI Reduction IC
文件大小: 382.35KB 共8页
简 介:October 2003 rev
Low-Power EMI Reduction IC
Features
FCC approved method of EMI attenuation Provides up to 15 dB EMI reduction Generates 1X, 2X, and 4X low EMI spread spectrum clock of the input frequency 1X: P2811, 2X: P2812, 4X: P2814 Optimized for input frequency range from 10 to 40 MHz P2811: 10 to 40 MHz P2812: 10 to 40 MHz P2814: 10 to 40 MHz Internal loop filter minimizes external components and board space Selectable spread options: Down Spread and Center Spread Low inherent cycle-to-cycle jitter Eight spread % selections: ±0.625% to –3.5% 3.3 V operating voltage CMOS/TTL compatible inputs and outputs Pinout compatible with Cypress CY25811, CY25812, and CY25814 Products available for industrial temperature range Available in 8-pin SOIC and TSSOP
P2811/12/14
Deviation and Spread Option Selections section). These combinations include Down Spread, Center Spread and percentage deviation range from ±0.625% to -3.50%. The P28xx reduces electromagnetic interference (EMI) at the clock source, allowing a system wide EMI reduction for all the down stream clocks and data dependent signals. The P28xx allows significant system cost savings by reducing the number of circuit board layers, ferrite beads, shielding, and other passive components that are traditionally required to pass EMI regulations. The P28xx modulates the output of a single PLL in order to “spread” the bandwidth of a synthesized clock, thereby decreasing the peak amplitudes of its harmonics. This res……
