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CY25811 Datasheet(PDF) 1 Page - Cypress Semiconductor

Part No. CY25811
Description  Spread Spectrum Clock Generator
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Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
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CY25811 Datasheet(HTML) 1 Page - Cypress Semiconductor

 
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Spread Spectrum Clock Generator
CY25811/12/14
Cypress Semiconductor Corporation
3901 North First Street
San Jose
, CA 95134
408-943-2600
Document #: 38-07112 Rev. *E
Revised June 03, 2004
Features
• 4- to 32-MHz input frequency range
• 4- to 128-MHz output frequency range
• Accepts clock, crystal, and resonator inputs
• 1x, 2x, and 4x frequency multiplication:
— CY25811: 1x; CY25812: 2x; CY25814: 4x
• Center and down spread modulation
• Low power dissipation:
— 3.3V = 52 mW-typ @ 6MHz
— 3.3V = 60 mW-typ @ 12MHz
— 3.3V = 72 mW-typ @ 24MHz
• Low cycle-to cycle jitter:
— 8 MHz = 450 ps-max
— 16 MHz = 225 ps-max
— 32 MHz = 150 ps-max
• Available in 8-pin SOIC and TSSOP packages
• Commercial and industrial temperature ranges
Applications
• Printers and MFPs
• LCD panels
• Digital copiers
•PDAs
• CD-ROM, VCD, and DVD
• Networking, LAN/WAN
• Scanners
• Modems
• Embedded digital systems
Benefits
• Peak EMI reduction by 8 to 16 dB
• Fast time to market
• Cost reduction
Block Diagram
Pin Configuration
S1
S0
FRSEL
300K
VDD
VSS
XIN
XOUT
SSCLK
8pF
REFERENCE
DIVIDER
PD and
CP
LF
VCO
VCO
COUNTE
R
COUNTER
and
MUX
INPUT
DECODER
LOGIC
1
7
8
2
5
MODULATION
CONTROL
3
4
6
8pF
1
2
3
4
8
7
6
5
XIN/CLKIN
VSS
S1
S0
XOUT
VDD
FRSEL
SSCLK
CY25811
CY25812
CY25814
8-pin SOIC/TSSOP


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