|
CY25811_07 Datasheet, PDF (1/12 Pages) Cypress Semiconductor – Spread Spectrum Clock Generator | |||
|
Features
â 4 to 32 MHz input frequency range
â 4 to 128 MHz output frequency range
â Accepts clock, crystal, and resonator inputs
â 1x, 2x, and 4x frequency multiplication:
â CY25811: 1x; CY25812: 2x; CY25814: 4x
â Center and down spread modulation
â Low power dissipation:
â 3.3V = 52 mW-typ at 6 MHz
â 3.3V = 60 mW-typ at12 MHz
â 3.3V = 72 mW-typ at 24 MHz
â Low cycle to cycle jitter:
â 8 MHz = 480 ps-max
â 16 MHz = 400 ps-max
â 32 MHz = 450 ps-max
â Available in 8 pin SOIC and TSSOP packages
â Commercial and industrial temperature ranges
CY25811/12/14
Spread Spectrum Clock Generator
Applications
â Printers and MFPs
â LCD panels
â Digital copiers
â PDAs
â CD-ROM, VCD, and DVD
â Networking, LAN/WAN
â Scanners
â Modems
â Embedded digital systems
Benefits
â Peak EMI reduction by 8 to 16 dB
â Fast time to market
â Cost reduction
Logic Block Diagram
300K
XIN 1
8pF
XOUT 8
8pF
VDD 7
VSS 2
REFERENCE
DIVIDER
PD and
CP
LF
MODULATION
CONTROL
6
FRSEL
INPUT
DECODER
LOGIC
34
S1 S0
VCO
COUNTE
R
VCO
COUNTER
and
5
MUX SSCLK
Cypress Semiconductor Corporation ⢠198 Champion Court
Document Number: 38-07112 Rev. *F
⢠San Jose, CA 95134-1709 ⢠408-943-2600
Revised September 21, 2007
[+] Feedback
|
▷ |