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CY25811/12/14: Spread Spectrum Clock Generator | Cypress Semiconductor

CY25811/12/14: Spread Spectrum Clock Generator

Last Updated: 
Jun 14, 2017

Spread Spectrum Clock Generator


  • 4 to 32 MHz Input Frequency Range
  • 4 to 128 MHz Output Frequency Range
  • Accepts Clock, Crystal, and Resonator Inputs
  • 1x, 2x, and 4x frequency multiplication:
    • CY25811: 1x; CY25812: 2x; CY25814: 4x
  • Center and Down Spread Modulation
  • Low Power Dissipation:
    • 3.3V = 52 mW - typ at 6 MHz
    • 3.3V = 60 mW - typ at 12 MHz
    • 3.3V = 72 mW - typ at 24 MHz
  • For more, see pdf

Functional Description

The CY25811/12/14 products are Spread Spectrum Clock Generator (SSCG) ICs used for the purpose of reducing electromagnetic interference (EMI) found in today’s high speed digital electronic systems.

The devices use a Cypress proprietary phase-locked loop (PLL) and Spread Spectrum Clock (SSC) technology to synthesize and modulate the frequency of the input clock. By frequency modulating the clock, the measured EMI at the fundamental and harmonic frequencies is greatly reduced.