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參數(shù)資料
| 型號(hào)： | ASM3P2180A |
| 廠商： | Alliance Semiconductor Corporation |
| 英文描述： | Peak Reducing EMI Solution |
| 中文描述： | 峰值抑制EMI解決方案 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 202K |
| 代理商： | ASM3P2180A |
Alliance Semiconductor
2595, Augustine Drive
Santa Clara
CA 95054
Tel 408 855 4900
Fax 408 855 4999
www.alsc.com
September 2004
rev 1.0
ASM3P2180A
Notice: The information in this document is subject to change without notice.
Peak Reducing EMI Solution
Features
Generates an EMI optimized clocking
signal at the output.
Selectable output frequency range.
Single 1.25% or 2.4% down spread
output.
Integrated loop filter components.
Operates with a 3.3V supply.
Low-power CMOS design.
Available in 8-pin SOIC and 8-pin
TSSOP packages.
Product Description
The ASM3P2180A is a versatile Spread
Spectrum
frequency
specifically
for
a
wide
frequencies.
The
ASM3P2180A
electromagnetic interference (EMI) at the clock
source, allowing system wide reduction of EMI
of down stream clock and data dependent
signals. The ASM3P2180A allows significant
system cost savings by reducing the number of
circuit board layers and shielding that are
traditionally required to pass EMI regulations.
The ASM3P2180A modulates the output of a
single PLL in order to “spread” the bandwidth of
a synthesized clock, thereby decreasing the
peak amplitudes of its harmonics. This results in
significantly lower system EMI compared to the
Simplified Block Diagram
modulator
range
designed
of
clock
reduces
typical narrow band signal produced by
oscillators and most clock generators. Lowering
EMI by increasing a signal’s bandwidth is called
spread spectrum clock generation.
The ASM3P2180A uses the most efficient and
optimized modulation profile approved by the
FCC and is implemented by using a proprietary
all-digital method.
Applications
The ASM3P2180A is targeted towards notebook
LCD displays, other displays using an LVDS
interface, PC peripheral devices and embedded
systems.
Key Specifications
Description
Specification
Supply voltages
V
DD
= 3.3V ± 5%
6 MHz
≤
Fin
≤
10 MHz
18 MHz
≤
Fin
≤
30 MHz
325 pS (max)
FS1=0
Frequency
range
FS1=1
Cycle-to-cycle jitter
Selectable spread percentage
-1.25% or –2.4%
Output duty cycle
45/55% (worst case)
Output rise and fall time
5ns (maximum)
X1
X2
3.3V
Spread spectrum output
(EMI suppressed)
ASM3P2180A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ASM3P2180A-08SR | Peak Reducing EMI Solution |
| ASM3P2180A-08ST | Peak Reducing EMI Solution |
| ASM3P2180A-08TR | Peak Reducing EMI Solution |
| ASM3P2180A-08TT | Peak Reducing EMI Solution |
| ASM3P2182A | LCD Panel EMI Reduction IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ASM3P2180A-08SR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Peak Reducing EMI Solution |
| ASM3P2180A-08ST | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Peak Reducing EMI Solution |
| ASM3P2180A-08TR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Peak Reducing EMI Solution |
| ASM3P2180A-08TT | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Peak Reducing EMI Solution |
| ASM3P2180AF-08SR | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 6-30MHZ 3.3V GP EMI RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
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