Datasheet > 3EQHM8-DT-5.000R-C0.5

3EQHM8-DT-5.000R-C0.5

更新时间： 2024-11-06 19:41:23

品牌	Logo	应用领域
EUROQUARTZ		/
页数	文件大小	规格书
3页	613K
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Oscillator,

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3EQHM8-DT-5.000R-C0.5 技术参数

生命周期：	Contact Manufacturer	Reach Compliance Code：	compliant
风险等级：	5.57	Base Number Matches：	1

3EQHM8-DT-5.000R-C0.5 数据手册

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EQHM8 Group ‘R’ Low EMI Oscillators

8 pin Dual-in-Line Spread Spectrum Clock Ocillator

Page 1 of 3

Provides up to 12dB reduction in system EMI

‘Drop-in’ replacement for standard clocks

Choice of modulation rate and spread

Industry-standard 8 pin DIL package

DESCRIPTION

EQHM8R series low EMI oscillators can reduce system EMI by 12dB.

The oscillators are a ‘drop-in’ replacement for standard oscillators.

EMI reduction is achieved by the use of Spread Spectrum Technology

whereby the mode energy is spread over a wider bandwidth. The

modulation carrier frequency in the kHz region makes the process

transparent to the oscillator frequency. There is a choice of

modulation rates and spread.

The principal cause of EMI problems is the system

clock. Therefore, rather than patch the problem

with ferrite beads, filters, ground planes and

metal shielding the most efficient and economic

method of EMI reduction is to use a low EMI clock

oscillator.

Compared with conventional clock oscillators

3EQHM8R series Spread Spectrum (Dithered)

Oscillators can reduce RMI by as much as 12dB.

The part is a 'drop-in' replacement for a standard

8 pin DIL clock oscillator hence there is no

requirement to re-design existing PCBs.

SPREAD SPECTRUM TECHNOLOGY

Unlike a conventional clock oscillator, in a Spread Spectrum Clock

Oscillator the mode energy is spread over a wider bandwidth. This is

achieved resulting from the frequency modulation technique. The

controlled modulation process may be on all on one side of the

nominal frequency (known as DOWN SPREAD,) or spread equally

either side of nominal (CENTRE SPREAD). Down Spread is preferred

is over-clocking would be a problem to the system.

APPLICATIONS

Printers, Multiple Function Printers (MPCs)

Digital Copiers; PDAs

Networking: LAN/WAN; Routers

Storage Systems (CD-ROM, VCD, DVD, HDD)

Scanners; Modems; Projectors

Embedded Systems

Musical Instruments

Automotive: GPS car navigation systems

LCD PC Monitors; LSD TVs

ADSL; PCMCIA

Still Digital Cameras (SDCs)

MODULATION TYPES - EXAMPLES

Output amplitude (dB) vs. frequency span (MHz)

EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE

Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk

12 3

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