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Cypress Semiconductor Electronic Components Datasheet

CY25568 Datasheet

Spread Spectrum Clock Generator

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CY25568
Spread Spectrum Clock Generator
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
Non-modulated reference frequency output
Center and down spread modulation
Low power dissipation
3.3 V = 52 mW-typ at 6 MHz
3.3 V = 60 mW-typ at 12 MHz
3.3 V = 72 mW-typ at 24 MHz
Power-down mode
Low cycle-to cycle jitter
8 MHz = 195 ps-typ
16 MHz = 175 ps-typ
32 MHz = 100 ps-typ
Available in 16-pin (150-mil.) SOIC package
Applications
Printers and MFPs
LCD panels and monitors
Digital copiers
PDAs
Automotive
CD-ROM, VCD and DVD
Networking, LAN/WAN
Scanners
Modems
Embedded digital systems
Benefits
Peak EMI reduction by 8 to 16dB
Fast time to market
Cost reduction
Logic Block Diagram
300K
XIN 1
XOUT 16
8pF
8pF
VDD 13
VDD 12
VSS 3
VSS 2
REFERENCE
DIVIDER
PD and CP
LF
MODULATION
CONTROL
VCO
COUNTER
VCO
INPUT
DECODER LOGIC
11
FRSEL
4
5
1
5
1
4
1
0
S1 SO D1 DO PD#
DIVIDER
and
MUX
7 REFOUT
6 SSCLK1
9 SSCLK2
8 SSCLK3
Cypress Semiconductor Corporation • 198 Champion Court
wwwD.DocautamSheenett4NUu.nmebt er: 38-07111 Rev. *D
• San Jose, CA 95134-1709 • 408-943-2600
Revised July 18, 2011


Cypress Semiconductor Electronic Components Datasheet

CY25568 Datasheet

Spread Spectrum Clock Generator

No Preview Available !

CY25568
Contents
Pinouts .............................................................................. 2
Pin Definitions .................................................................. 2
General Description ......................................................... 2
Absolute Maximum Ratings ............................................ 3
DC Electrical Characteristics .......................................... 3
Timing Electrical Characteristics .................................... 3
Input Frequency Range and Selection ........................... 4
Output Clocks .............................................................. 4
REFOUT ...................................................................... 4
SSCLK1, 2 and 3 ......................................................... 4
Spread% Selection ........................................................... 5
3-Level Digital Inputs ................................................... 5
Power Down (PD#) ...................................................... 6
Modulation Rate .......................................................... 6
Characteristic Curves ...................................................... 7
SSCG Profiles ............................................................. 8
Application Schematic ..................................................... 9
Ordering Code Definitions ........................................... 9
Package Diagram ............................................................ 10
Acronyms ........................................................................ 11
Document Conventions ................................................. 11
Units of Measure ....................................................... 11
Document History Page ................................................. 12
Sales, Solutions, and Legal Information ...................... 13
Worldwide Sales and Design Support ....................... 13
Products .................................................................... 13
PSoC Solutions ......................................................... 13
Document Number: 38-07111 Rev. *D
Page 2 of 14


Part Number CY25568
Description Spread Spectrum Clock Generator
Maker Cypress Semiconductor
Total Page 14 Pages
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