Cypress Semiconductor CY25819 Технический паспорт

Просмотреть онлайн или скачать pdf Технический паспорт для Компьютерное оборудование Cypress Semiconductor CY25819. Cypress Semiconductor CY25819 7 страниц. Cypress spread spectrum clock generator specification sheet

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