CY25561
Features
- 50 to 166 MHz operating frequency range
- Wide range of spread selections: 9
- Accepts clock and crystal inputs
- Low power dissipation
- 70 m W
- Typ at 66 MHz
- Frequency spread disable function
- Center spread modulation
- Low cycle-to-cycle jitter
- 8-pin SOIC Package
Functional Description
CY25561 is a spread spectrum clock generator (SSCG) IC used to reduce electromagnetic Interference (EMI) found in today’s high speed digital electronic systems. CY25561 uses a Cypress proprietary phase-locked loop (PLL) and spread spectrum clock (SSC) technology to synthesize and frequency modulate the input frequency of the reference clock. By doing this, the measured EMI at the fundamental and harmonic frequencies of clock (SSCLK) is reduced.
Logic Block Diagram
This reduction in radiated energy can significantly reduce the cost of plying with regulatory requirements and time to market without degrading the system performance. CY25561 is a very simple and versatile device to use....
