ASM3P2111AF-08ST datasheet(1/8 Pages) ALSC

номер детали	ASM3P2111AF-08ST

подробное описание детали	Peak EMI Reducing Solution

PDF	8 Pages

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производитель	ALSC [Alliance Semiconductor Corporation]

домашняя страница	https://www.alliancememory.com

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Alliance Semiconductor

2575 Augustine Drive

• Santa Clara CA • Tel: 408-855-4900 • Fax: 408-855-4999 • www.alsc.com

rev 1.3

March 2005

ASM3P2111A

Peak EMI Reducing Solution

Features

Generates an EMI optimized clocking signal at

output.

Input frequency – 25 MHz.

Frequency outputs:

o

60 MHz (unmodulated)

o

2 x 48 MHz (unmodulated)

o

66.6 MHz (modulated) -1.7% down spread

Modulation rate: 30 KHz.

Supply voltage range: 3.3V ± 0.3V.

Available in 8-pin SOIC Package.

Commercial and Industrial Temperature range.

Product Description

The ASM3P2111A is a versatile spread spectrum

frequency

modulator.

The

ASM3P2111A

reduces

electromagnetic interference (EMI) at the clock source.

The ASM3P2111A allows significant system cost savings

by reducing the number of circuit board layers and

shielding that are required to pass EMI regulations. The

ASM3P2111A 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’s bandwidth is called spread spectrum clock

generation.

Applications

ASM3P2111A is targeted towards EMI management for

high speed digital applications such as PC peripheral

devices, consumer electronics and embedded controller

systems.

Block Diagram

VDD

Crystal

Oscillator

66.6 MHz

Modulated

XIN /CLKIN

XOUT

VSS

48 MHz_2

60 MHz

48 MHz_1

PLL1

PLL2

48 MHz_1

Аналогичный номер детали - ASM3P2111AF-08ST

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Alliance Semiconductor ...	ASM3P2111B	207Kb / 8P	Peak EMI Reducing Solution
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Alliance Semiconductor ...	ASM3P2111BF-08SR	207Kb / 8P	Peak EMI Reducing Solution
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Аналогичное описание - ASM3P2111AF-08ST

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ASM3P2111AF-08ST датащи(PDF) 1 Page - Alliance Semiconductor Corporation

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