Features: • Cypress PREMIS™ family offering• Generates an EMI optimized clocking signal at the output• Selectable output frequency range• Single 1.25%, 2.5%, 5% or 10% down or center spread output• Integrated loop filter components• Operates with a 3.3 or ...
W530: Features: • Cypress PREMIS™ family offering• Generates an EMI optimized clocking signal at the output• Selectable output frequency range• Single 1.25%, 2.5%, 5% or 10% ...
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The W530 product is one of a series of devices in the Cypress PREMIS family. The PREMIS family incorporates the latest advances in PLL spread spectrum frequency synthesizer techniques. By frequency modulating the output with a low frequency carrier, peak EMI is greatly reduced. Use of this technology allows systems to pass increasingly difficult EMI testing without resorting to costly shielding or redesign.
In a system, not only is EMI reduced in the various clock lines, but also in all signals which are synchronized to the clock. Therefore, the benefits of using this technology increase with the number of address and data lines in the system. The Simplified Block Diagram shows a simple implementation.