- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381371 > ASM3P2811B (Alliance Semiconductor Corporation) Low Power EMI Reduction IC PDF資料下載
參數(shù)資料
| 型號： | ASM3P2811B |
| 廠商： | Alliance Semiconductor Corporation |
| 英文描述： | Low Power EMI Reduction IC |
| 中文描述： | 低功耗電磁干擾降低集成電路 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 159K |
| 代理商： | ASM3P2811B |
September 2003
rev 1.0
ASM3P2811A/B
ASM3P2812A/B
ASM3P2814A/B
Alliance Semiconductor
2575, Augustine Drive
Santa Clara, CA
Tel: 408.855.4900
Fax: 408.855.4999
www.alsc.com
Notice: The information in this document is subject to change without notice.
Low Power EMI Reduction IC
Features
FCC approved method of EMI attenuation.
Provides up to 15dB EMI reduction.
Generates a 1X, 2X and 4X low EMI spread
spectrum clock of the input frequency.
o
1X: ASM3P2811A/B
o
2X: ASM3P2812A/B
o
4X: ASM3P2814A/B
Optimized for input frequency range from 10MHz
to 40 MHz.
ASM3P2811A/B: 10 to 40MHz
o
ASM3P2812A/B: 10 to 40MHz
o
ASM3P2814A/B: 10 to 40MHz
Internal loop filter minimizes external components
and board space.
Selectable spread options: Down Spread and
Center Spread.
8 spread frequency deviation selections:
o
±0.625% to –3.5%
Low inherent cycle-to-cycle jitter.
3.3V operating voltage range.
CMOS/TTL compatible inputs and outputs.
Pinout
compatible
CY25812 and CY25814.
Products are available for industrial temperature
range.
Available in 8-pin SOIC and TSSOP.
Product Description
The ASM3P28XX devices are versatile spread spectrum
frequency modulators designed specifically for a wide
range of input clock frequencies from 10MHz to 40MHz.
(Refer Input/Output Frequency Range Selection Table)
.
The ASM3P28XX can generate an EMI reduced clock
from crystal, ceramic resonator, or system clock. The
ASM3P28XX-A and the ASM3P28XX-B offer various
combinations
of
spread
deviations (
Refer Output Frequency Deviation and
Spread Option Selection Table).
These combinations
include Down and Center Spread and percentage
with
Cypress
CY25811,
options
and
percentage
deviation range from ±0.625% to –3.50%.
The ASM3P28XX reduces electromagnetic interference
(EMI) at the clock source, allowing system wide reduction
of EMI of down stream clock and data dependent
signals. The ASM3P28XX allows significant system cost
savings by reducing the number of circuit board layers,
ferrite beads, shielding, and other passive components
that are traditionally required to pass EMI regulations.
The ASM3P28XX modulates the output of a single PLL in
order to “spread” the bandwidth of a synthesized clock,
and more importantly, decreases the peak amplitudes of
its harmonics. This results in significantly lower system
EMI compared to the typical narrow band signal produced
by oscillators and most frequency generators. Lowering
EMI by increasing a signal’s bandwidth is called ‘spread
spectrum clock generation’.
The ASM3P28XX uses the most efficient and optimized
modulation profile approved by the FCC and is
implemented in a proprietary all-digital method.
Applications
The ASM3P28XX is targeted towards EMI management
for memory and LVDS interfaces in mobile graphic
chipsets and high-speed digital applications such as PC
peripheral devices, consumer electronics, and embedded
controller systems.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ASM3P2811A | Low Power EMI Reduction IC |
| ASM3P2812A | Low Power EMI Reduction IC |
| ASM3P2812B | Low Power EMI Reduction IC |
| ASM3P2814A | Low Power EMI Reduction IC |
| ASM3P2814B | Low Power EMI Reduction IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ASM3P2811BF-08SR | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 10-40MHZ 1X 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 |
| ASM3P2811BF-08ST | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Low Power EMI Reduction IC |
| ASM3P2811BF-08TR | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Low Power EMI Reduction IC |
| ASM3P2811BF-08TT | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Low Power EMI Reduction IC |
| ASM3P2811BG-08SR | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Low Power EMI Reduction IC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。