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參數(shù)資料
| 型號： | ASM3P2853A |
| 廠商： | Alliance Semiconductor Corporation |
| 英文描述： | Peak EMI Reducing Solution |
| 中文描述： | 降低峰值電磁干擾解決方案 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 2719K |
| 代理商： | ASM3P2853A |
Alliance Semiconductor
2575 Augustine Drive
Santa Clara CA
Tel: 408-855-4900
Fax: 408-855-4999
www.alsc.com
rev 0.7
December 2004
ASM3P2853A
Peak EMI Reducing Solution
Features
Generates an EMI optimized clock signal at
output.
Input frequency: 25 MHz.
Frequency outputs:
USB Clock (48 MHz unmodulated)
50 MHz (modulated), ±1% centre spread
Modulation rate: 39 KHz.
Spread Spectrum ON/OFF control
Supply voltage range 2.5V ± 5%.
Available in 8-pin SOIC package.
Commercial Temperature range.
o
o
Product Description
The ASM3P2853A is a versatile spread spectrum
frequency
modulator.
The
electromagnetic interference (EMI) at the clock source.
The ASM3P2853A allows significant system cost savings
by reducing the number of circuit board layers and
ASM3P2853A
reduces
shielding that are required to pass EMI regulations. The
ASM3P2853A modulates the output of 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
typical narrow band signal produced by oscillators and
most clock generators. Lowering EMI by increasing a
signal’ bandwidth is called spread spectrum clock
generation.
Applications
ASM3P2853A is targeted towards EMI management for
high speed digital applications such as PC peripheral
devices, consumer electronics and embedded controller
systems.
Block Diagram
V
SS
V
DD
Crystal
Oscillator
50 MHz
Modulated
XIN
XOUT
USB Clock
(48 MHz
Unmodulated)
PLL1
PLL2
PWDNB
SSONB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ASM3P2853AF-08-SR | Peak EMI Reducing Solution |
| ASM3P2853AF-08-ST | Peak EMI Reducing Solution |
| ASM3P2869A | Low Power Peak EMI Reducing Solution |
| ASM3I2869A-08TT | Octal Bus Transceiver With 3-State Outputs 20-TVSOP -40 to 85 |
| ASM3I2869AF-08ST | Octal Bus Transceiver With 3-State Outputs 20-TVSOP -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ASM3P2853AF-08SR | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Peak EMI Reducing Solution |
| ASM3P2853AF-08-SR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Peak EMI Reducing Solution |
| ASM3P2853AF-08ST | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Peak EMI Reducing Solution |
| ASM3P2853AF-08-ST | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Peak EMI Reducing Solution |
| ASM3P2853AG-08SR | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 2.5V CUSTOM CG 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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