參數(shù)資料
型號(hào): SM561
廠商: Cypress Semiconductor Corp.
英文描述: Spread Spectrum Clock Generator
中文描述: 擴(kuò)頻時(shí)鐘發(fā)生器
文件頁數(shù): 1/8頁
文件大小: 0K
代理商: SM561
Spread Spectrum Clock Generator
SM561
Cypress Semiconductor Corporation
3901 North First Street
San Jose
, CA 95134
408-943-2600
Document #: 38-07021 Rev. *C
Revised December 14, 2002
Features
54- to 166-MHz operating frequency range
Wide (9) range of spread selections
Accepts clock and crystal inputs
Low power dissipation
3.3V = 165 mw. (Fin = 120 MHz)
Frequency spread disable function
Center spread modulation
Low cycle-to-cycle jitter
Eight-pin SOIC package
Applications
High-resolution VGA controllers
LCD panels and monitors
Workstations and servers
Benefits
Peak electromagnetic interference (EMI) reduction by 8 to
16 dB
Fast time to market
Cost reduction
Block Diagram
Pin Configuration
PD
VCO
1
8
Xin/
CLK
Xout
REFERENCE
DIVIDER
4 pf
8 pF
250 K
FEEDBACK
DIVIDER
MODULATION
CONTROL
DIVIDER
AND MUX
5
2
3
7
VDD
SSCC
SSCLK
VSS
4
6
LF
INPUT
DECODER
LOGIC
S1
S0
CP
1
2
3
4
8
7
6
5
Xin/CLK
VDD
SSCLK
VSS
Xout
S0
S1
SSCC
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