描述 Description

The ASM3P28XX devices are versatile spread spectrum frequency modulators designed specifically for a wide range of input clock frequencies from 10 MHz to 40 MHz. 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 options and percentage deviations. These combinations include Down and Center Spread, and percentage deviation range from ±0.625% to -3.5%.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.

特性 Features

Internal loop filter
Minimizes external components and board space
Generates a 1x, 2x and 4x low EMI spread spectrum clock of the input frequency
Selectable spread options:Down Spread and Center Spread
CMOS/TTL compatible inputs and out
LVDS interfaces in mobile graphicchipsets

應(yīng)用 Application

EMI management for memory
PCperipheral devices, consumer electronics, and embedded controller systems

簡(jiǎn)介

ASM3P2812A屬于集成電路（IC）的時(shí)鐘發(fā)生器PLL頻率合成器。由制造生產(chǎn)的ASM3P2812A時(shí)鐘發(fā)生器，PLL，頻率合成器時(shí)鐘發(fā)生器、PLL 和頻率合成器集成電路 (IC) 可為邏輯器件提供參考信號(hào)的穩(wěn)定定時(shí)脈沖，這些器件包括計(jì)算機(jī)、微控制器、數(shù)據(jù)通信系統(tǒng)和圖形/視頻發(fā)生器。這些集成電路可能包括緩沖器、驅(qū)動(dòng)器、分頻器、倍頻器、多路復(fù)用器、合成器、扇出分配器和預(yù)分頻器。