CY25811SXC

The CY25811 product is 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. This reduction in radiated energy significantly reduces the cost of complying with regulatory agency requirements and improves time to market without degrading system performance. The input frequency range is 4 to 32 MHz and accepts clock, crystal and ceramic resonator inputs. The output clock can be selected to produce 1x, 2x, or 4x multiplication of the input frequency with Spread Spectrum Frequency Modulation. The use of 2x or 4x frequency multiplication eliminates the need for higher order crystals and enables you to generate up to 128 MHz Spread Spectrum Clock (SSC) by using only first order crystals. This reduces the cost while improving the system clock accuracy, performance, and complexity.

• 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
• 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
• Low Cycle to Cycle Jitter:
  • 8 MHz = 480 ps-max
  • 16 MHz = 400 ps-max
  • 32 MHz = 450 ps-max
• Available in 8-pin SOIC and TSSOP Packages
• Commercial and Industrial Temperature Ranges