P1708C Datasheet PDF - Alliance Semiconductor

Product Description
   The P1708C is a versatile spread spectrum frequency modulator designed specifically for input clock frequencies. The P1708C reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of down stream clock and data dependent signals. The P1708C 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.

FEATUREs
■ FCC approved method of EMI attenuation.
■ Generates a low EMI spread spectrum clock of the
   input frequency.
■ Optimized for frequency range from 50 to 110MHz.
■ Internal loop filter minimizes external components
   and board space.
■ Four selectable spread ranges.
■ Low inherent cycle-to-cycle jitter.
■ 3.3V operating voltage range.
■ TTL or CMOS compatible inputs and outputs.
■ Ultra-low power CMOS design.
   ■ 8.46 mA @3.3V, 54MHz
   ■ 9.79 mA @3.3V, 65MHz
   ■ 12.06 mA @3.3V, 81MHz
   ■ 16.51 mA @3.3V, 108MHz
■ Supports notebook VGA and other LCD timing
   controller applications.
■ Pinout compatible to ICS MK1708 and Cypress
   CY25560.
■ SSON/SBM pin for Spread Spectrum On/Off and
   Standby Mode controls.
■ Available in 8-pin SOIC and TSSOP.

APPLICATIONs
   The P1708C is targeted towards notebook LCD displays,
   and other displays using an LVDS interface, PC peripheral
   devices, and embedded systems.