Datasheet > ASM3P1819NF.08.SR

ASM3P1819NF.08.SR

更新时间： 2024-11-28 00:56:15

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
6页	109K
描述
Low Power Mobile VGA EMI Reduction IC

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ASM3P1819N

Product Preview

Low Power Mobile VGA EMI

Reduction IC

Description

The ASM3P1819N is a versatile spread spectrum frequency

modulator designed specifically for a wide range of input clock

frequencies from 20 to 40 MHz. The ASM3P1819N can generate an

EMI reduced clock from crystal, ceramic resonator, or system clock.

The ASM3P1819N reduces electromagnetic interference (EMI) at

the clock source, allowing a system wide EMI reduction for all the

down stream clocks and data dependent signals. The ASM3P1819N

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 ASM3P1819N modulates the output of a single PLL in order to

“spread” the bandwidth of a synthesized clock, thereby decreasing the

peak amplitude of its harmonics. This results in a significantly lower

system EMI compared to the typical narrow band signal produced by

oscillators and most clock generators.

http://onsemi.com

SOIC−8

S SUFFIX

TSSOP−8

T SUFFIX

CASE 751BD

CASE 948AL

PIN CONFIGURATION

XOUT

VDD

PD#

XIN

VSS

Lowering EMI by increasing a signal’s bandwidth is called “spread

spectrum clock generation”. The ASM3P1819N uses the most

efficient and optimized modulation profile approved by the FCC and

is implemented by using a proprietary all digital method.

REF

ModOUT

(Top View)

Applications

The ASM3P1819N 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 system.

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 6 of this data sheet.

Features

• FCC Approved Method of EMI Attenuation

• Provides up to 15 dB EMI Reduction

• Generates a Low EMI Spread Spectrum Clock and a Non−spread

Reference Clock of the Input Frequency

• Optimized for Frequency Range from 20 MHz to 40 MHz

• Internal Loop Filter Minimizes External Components and Board Space

• Down Spread Deviation: −1.25%

• Low Inherent Cycle−to−Cycle Jitter

• 3.3 V Operating Voltage

• CMOS/TTL Compatible Inputs and Outputs

• Low Power CMOS Design

• Supports Notebook VGA and Other LCD Timing Controller

Applications

• Power Down Function for Mobile Application

• Products are Available for Industrial Temperature Range

• Available in 8 pin SOIC and TSSOP Packages

• These are Pb−Free Devices

This document contains information on a product under development. ON Semiconductor

reserves the right to change or discontinue this product without notice.

Publication Order Number:

August, 2011 − Rev. P2

ASM3P1819N/D

12 3 4 5 6

中文翻译

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与ASM3P1819NF.08.SR相关器件

型号	品牌	获取价格	描述	数据表
ASM3P1819NF.08.ST	ONSEMI	获取价格	Low Power Mobile VGA EMI Reduction IC
ASM3P1819NF.08.TR	ONSEMI	获取价格	Low Power Mobile VGA EMI Reduction IC
ASM3P1819NF.08.TT	ONSEMI	获取价格	Low Power Mobile VGA EMI Reduction IC
ASM3P1819NF-08-SR	ALSC	获取价格	Low Power Mobile VGA EMI Reduction IC
ASM3P1819NF-08-SR	PULSECORE	获取价格	Low Power Mobile VGA EMI Reduction IC
ASM3P1819NF-08-ST	PULSECORE	获取价格	Low Power Mobile VGA EMI Reduction IC
ASM3P1819NF-08-ST	ALSC	获取价格	Low Power Mobile VGA EMI Reduction IC
ASM3P1819NF-08-TR	ALSC	获取价格	Low Power Mobile VGA EMI Reduction IC
ASM3P1819NF-08-TR	PULSECORE	获取价格	Low Power Mobile VGA EMI Reduction IC
ASM3P1819NF-08-TT	PULSECORE	获取价格	Low Power Mobile VGA EMI Reduction IC

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