CY25811/12/14
Spread Spectrum Clock Generator
Features
鈥?4- to 32-MHz input frequency range
鈥?4- to 128-MHz output frequency range
鈥?Accepts clock, crystal, and resonator inputs
鈥?1x, 2x, and 4x frequency multiplication:
鈥?CY25811: 1x; CY25812: 2x; CY25814: 4x
鈥?Center and down spread modulation
鈥?Low power dissipation:
鈥?3.3V = 52 mW-typ @ 6MHz
鈥?3.3V = 60 mW-typ @ 12MHz
鈥?3.3V = 72 mW-typ @ 24MHz
鈥?Low cycle-to cycle jitter:
鈥?8 MHz = 450 ps-max
鈥?16 MHz = 225 ps-max
鈥?32 MHz = 150 ps-max
鈥?Available in 8-pin SOIC and TSSOP packages
鈥?Commercial and industrial temperature ranges
Applications
鈥?Printers and MFPs
鈥?LCD panels
鈥?Digital copiers
鈥?PDAs
鈥?CD-ROM, VCD, and DVD
鈥?Networking, LAN/WAN
鈥?Scanners
鈥?Modems
鈥?Embedded digital systems
Benefits
鈥?Peak EMI reduction by 8 to 16 dB
鈥?Fast time to market
鈥?Cost reduction
Block Diagram
Pin Configuration
300K
XIN/CLKIN
1
XIN
1
8pF
8
REFERENCE
DIVIDER
XOUT
VDD
FRSEL
SSCLK
PD and
CP
LF
XOUT
8
8pF
VSS
2
MODULATION
CONTROL
VCO
COUNTE
R
VCO
S1
3
S0
4
CY25811
CY25812
CY25814
7
6
VDD
7
5
VSS
2
6
INPUT
DECODER
LOGIC
3
4
COUNTER
and
MUX
5
SSCLK
8-pin SOIC/TSSOP
FRSEL
S1
S0
Cypress Semiconductor Corporation
Document #: 38-07112 Rev. *D
鈥?/div>
3901 North First Street
鈥?/div>
San Jose
,
CA 95134
鈥?/div>
408-943-2600
Revised December 22, 2003
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