Product Description
   The P28xx is a versatile spread spectrum frequency modulator designed specifically for input clock frequencies from 10 to 40 MHz (see Input/Output Frequency Range Selections). The P28xx can generate an EMI reduced clock from crystal, ceramic resonator, or system clock. The P28xx-A and P28xx-B offer various combinations of spread options and percentage deviations (see Output Frequency Deviation and Spread Option Selections section). These combinations include Down Spread, Center Spread and percentage deviation range from ±0.625% to -3.50%.

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

APPLICATIONs
   The P28xx is targeted towards EMI management for memory interfaces in mobile graphic chipsets and high-speed digital applications such as PC peripheral devices, consumer electronics, and embedded controller systems.