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8- to 32-MHz input frequency range
CY25818: 8鈥?6 MHz
CY25819: 16鈥?2 MHz
Separate modulated and unmodulated clocks
Accepts clock, crystal, and resonator inputs
Down spread modulation
Power-down function
Low-power dissipation
鈥?CY25818 = 33 mW-typ @ 8 MHz
鈥?CY25818 = 56 mW-typ @ 16 MHz
鈥?CY25819 = 36 mW-typ @ 16 MHz
鈥?CY25819 = 63 mW-typ @ 32 MHz
鈥?Low cycle-to-cycle jitter
鈥?SSCLK = 250 ps-typ
鈥?REFOUT = 275 ps-typ
鈥?Available in 8-pin (150-mil) SOIC package
Applications
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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
鈥?Peak electromagnetic interference (EMI) reduction by
8鈥?6 dB
鈥?Fast time to market
鈥?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. *A
鈥?/div>
3901 North First Street
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San Jose
鈥?/div>
CA 95134 鈥?408-943-2600
Revised December 28, 2002
CY25818相關型號PDF文件下載
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型號
版本
描述
廠商
下載
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英文版
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英文版
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英文版
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Field- and Factory-Programmable Spread Spectrum Clock Genera...
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Programmable Spread Spectrum Clock Generator for EMI Reducti...
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英文版
Programmable Spread Spectrum Clock Generator for EMI Reducti...
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英文版
Clocks and Buffers
ETC
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英文版
Frequency-multiplying, Peak-reducing EMI Solution
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英文版
Two PLL Programmable Clock Generator with Spread Spectrum
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英文版
Three PLL Programmable Clock Generator with Spread Spectrum
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