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CY25818 Datasheet(PDF) 1 Page - Cypress Semiconductor

Part No. CY25818
Description  Spread Spectrum Clock Generator
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Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
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CY25818 Datasheet(HTML) 1 Page - Cypress Semiconductor

   
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Spread Spectrum Clock Generator
CY25818/19
Cypress Semiconductor Corporation
198 Champion Court
San Jose
, CA 95134-1709
408-943-2600
Document #: 38-07362 Rev. *B
Revised April 11, 2006
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
REFERENCE
DIVIDER
PD and
CP
LF
VCO
DIVIDER
and
MUX
INPUT
DECODER
1
8
300K
MODULATION
CONTROL
3
6
S0 PD#
XIN/CLKIN
XOUT
VDD
7
VSS
2
4
SSCLK
5
REFCLK
VCO
COUNTER
2
1
3
4
8
7
6
5
XIN/CLKIN
Vss
S0
SSCLK
XOUT
Vdd
PD#
REFCLK
CY25818
CY25819
8 Pin SOIC
8-pin SOIC
Block Diagram
Pin Configuration
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