PDF CY25562 Data sheet ( Hoja de datos )

Número de pieza	CY25562
Descripción	Spread Spectrum Clock Generator
Fabricantes	Cypress Semiconductor
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No Preview Available ! CY25562 Spread Spectrum Clock Generator Features ■ 50 to 200 MHz Operating Frequency Range ■ Wide range of spread selections: 9 ■ Accepts Clock and Crystal Inputs ■ Low Power Dissipation ❐ 70 mW Typ (Fin = 65 MHz) ■ Frequency Spread Disable Function ■ Center Spread Modulation ■ Low Cycle-to-cycle Jitter ■ 8-pin SOIC Package Logic Block Diagram Xin/ CLK 1 Xout 8 VDD 2 VSS 3 Applications ■ High resolution VGA controllers ■ LCD panels and monitors ■ Workstations and servers Benefits ■ Peak EMI reduction by 8 to 16 dB ■ Fast time to market ■ Cost reduction 300K REFERENCE DIVIDER PD CP Loop Filter MODULATION CONTROL FEEDBACK DIVIDER vco INPUT DECODER LOGIC VDD 20 K VDD 20 K 20 K 5 SSCC VSS 67 S1 S0 20 K VSS DIVIDER & MUX 4 SSCLK Cypress Semiconductor Corporation • 198 Champion Court wwwD.DocautamSheenett4NUu.nmebt er: 38-07392 Rev. C • San Jose, CA 95134-1709 • 408-943-2600 Revised September 15, 2008 [+] Feedback 1 page Part Number Application Schematic Figure 4. Application Schematic VDD C3 0.1 uF 1 XIN/CLK 200 MHz Reference Clock 2 VDD 8 XOUT 4 SSCLK CY25562 VDD 5 SSCC VSS 3 6 S1 7 S0 VDD CY25562 The schematic in Figure 4 demonstrates how CY25562 is configured in a typical application. This application is using a 200 MHz reference clock connected to pin 1. Because an external reference clock is used, pin 8 (Xout) is left unconnected. This configuration depicts the profile and spectrum scans shown in Figure 3. Note that S0=S1=1, for a spread of approximately 1.1 percent. Document Number: 38-07392 Rev. C Page 5 of 8 [+] Feedback 5 Page

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