Datasheet > ASM3P2111B

ASM3P2111B

更新时间： 2022-12-27 18:02:43

品牌	Logo	应用领域
PULSECORE		/
页数	文件大小	规格书
8页	174K
描述
Peak EMI Reducing Solution

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ASM3P2111B 数据手册

February 2007

rev 0.2

ASM3P2111B

Peak EMI Reducing Solution

Features

allows significant system cost savings by reducing the

number of circuit board layers and shielding that are

required to pass EMI regulations. The ASM3P2111B

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.

•

Generates an EMI optimized clock at the output.

Input frequency: 25MHz.

Frequency outputs:

• 60MHz (unmodulated)

• 2 x 48MHz (unmodulated)

• 66.6MHz (modulated): -1.7% down spread

Modulation rate: 30KHz.

Supply voltage range: 3.3V ± 0.3V.

Available in 8-pin SOIC Package.

Commercial and Industrial Temperature range.

RoHS Compliant

•

Applications

ASM3P2111B is targeted towards EMI management for

high speed digital applications such as PC peripheral

devices, consumer electronics and embedded controller

systems.

Product Description

The ASM3P2111B is

a versatile spread spectrum

frequency modulator that reduces electromagnetic

interference (EMI) at the clock source. The ASM3P2111B

Block Diagram

60 MHz

XIN /CLKIN

XOUT

Crystal

PLL1

48 MHz_1

Oscillator

48 MHz_2

48 MHz_1

PLL2

66.6 MHz

Modulated

PulseCore Semiconductor Corporation

1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018

www.pulsecoresemi.com

Notice: The information in this document is subject to change without notice.

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