CY25568_11 Datasheet, PDF (1/14 Pages) Cypress Semiconductor – Spread Spectrum Clock Generator 4 to 32 MHz Input frequency range

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
8pF
XOUT ¹⁶
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
Document Number: 38-07111 Rev. *D
• San Jose, CA 95134-1709 • 408-943-2600
Revised July 18, 2011