CY25819

www.DataSheet4U.com CY25818/19 Spread Spectrum Clock Generator Features 8- to 32-MHz input frequency range CY25818: 8–16 MHz CY25819: 16–32 MHz Separate modulated and unmodulated clocks Accepts clock, crystal, and resonator inputs Down spread modulation Power-down function Low-power dissipation — CY25818 = 33 mW-typ @ 8 MHz — CY25818 = 56 mW-typ @ 16 MHz — CY25819 = 36 mW-typ @ 16 MHz — CY25819 = 63 mW-typ @ 32 MHz Low cycle-to-cycle jitter — SSCLK = 250 ps-typ — REFOUT = 275 ps-typ Available in 8-pin (150-mil) SOIC package Applications Printers and MFPs LCD panels and notebook PCs Digital copiers PDAs Automotive CD-ROM, VCD, and DVD Networking and LAN/WAN Scanners Modems Embedded digital systems Benefits Peak electromagnetic interference (EMI) reduction by 8–16 dB Fast time to market Cost reduction Block Diagram 300K Pin Configuration XIN/CLKIN 1 REFERENCE DIVIDER PD and CP LF XIN/CLKIN 1 Vss 2 8 XOUT XOUT 8 MODULATION CONTROL VDD 7 VCO COUNTER VCO CY25818 CY25819 7 Vdd 6 PD# 5 REFCLK S0 3 SSCLK 4 VSS 2 INPUT DECODER 3 6 DIVIDER and MUX 4 5 SSCLK REFCLK 8 Pin SOIC 8-pin SOIC S0 PD# Cypress Semiconductor Corporation Document #: 38-07362 Rev. *B 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Revised April 11, 2006 www.DataSheet4U.com . CY25818/19 Pin Description Pin 1 2 3 4 5 6 7 8 Name XIN/CLK Vss S0 SSCLK REFCLK PD# Vdd XOUT Power Supply Ground. Digital Spread% Control Pin. 3-Leve...