Datasheet > 3EQHM572-B-40.000N-D1.9

3EQHM572-B-40.000N-D1.9

更新时间： 2024-11-01 20:38:19

品牌	Logo	应用领域
EUROQUARTZ		振荡器
页数	文件大小	规格书
3页	269K
描述
CMOS Output Clock Oscillator, ROHS COMPLIANT, MINIATURE, SMD, 4 PIN

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3EQHM572-B-40.000N-D1.9 技术参数

是否Rohs认证：	符合	生命周期：	Contact Manufacturer
Reach Compliance Code：	compliant	风险等级：	5.71
JESD-609代码：	e4	振荡器类型：	CMOS
端子面层：	Gold (Au) - with Nickel (Ni) barrier	Base Number Matches：	1

3EQHM572-B-40.000N-D1.9 数据手册

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QUARTZ

3EQHM572N Low EMI Oscillator

EURO

7 x 5 x 1.4mm SMD - Group 'N'

Page 1 of 3

Provides from 8dB to 15dB reduction in system EMI

‘Drop-in’ replacement for standard clocks

Choice of modulation rate and spread

Miniature package: 7.0 mm x 5.0 mm x 1.4mm

N Group parts provide a low cost EMI reduction solution

In electrical systems the principal cause of electro-

magnetic interference (EMI) is the system clock

oscillator. Traditional methods of 'patching-up' systems

with too high a level of EMI is to use ferrite beads,

filters, ground planes, metal shielding and similar costly

methods, However, the most efficient and economic

method to reduce EMI is to reduce it at source: replace

the system clock ocillator with a low EMI clock oscillator.

DESCRIPTION

EQHM572 series low EMI oscillators can reduce system EMI from 8dB

to 16dB. 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, operating in the kHz

region, makes the process transparent to the oscillator frequency.

There is a choice of modulation rates and spread to suit application

requirements.

Compared with conventional clock oscillators, Spread

Spectrum (Dithered) Oscillators can reduce EMI by as

much as 16dB. The part is a 'drop-in' replacement for a

standard 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 by the frequency modulation technique. The controlled

modulation process may be applied to the 'down' side of the nominal

frequency (known as DOWN SPREAD,) or spread equally either side

of nominal (CENTRE SPREAD). Down Spread is preferred if over-

clocking would cause 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)

Medical devices

MODULATION TYPES - EXAMPLES

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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3EQHM572-C-13.990N-C1.2	EUROQUARTZ	获取价格	CMOS Output Clock Oscillator, ROHS COMPLIANT, MINIATURE, SMD, 4 PIN
3EQHM572-C-19.990N-C0.6	EUROQUARTZ	获取价格	CMOS Output Clock Oscillator, ROHS COMPLIANT, MINIATURE, SMD, 4 PIN
3EQHM572-C-32.768N-C0.6	EUROQUARTZ	获取价格	CMOS Output Clock Oscillator, ROHS COMPLIANT, MINIATURE, SMD, 4 PIN
3EQHM572-C-56.000N-C1.1	EUROQUARTZ	获取价格	CMOS Output Clock Oscillator, ROHS COMPLIANT, MINIATURE, SMD, 4 PIN
3EQHM572-D-16.000N-C1.4	EUROQUARTZ	获取价格	CMOS Output Clock Oscillator, ROHS COMPLIANT, MINIATURE, SMD, 4 PIN
3EQHM572-D-28.000N-D1.7	EUROQUARTZ	获取价格	CMOS Output Clock Oscillator, ROHS COMPLIANT, MINIATURE, SMD, 4 PIN
3EQHM572-D-79.990N-C1.4	EUROQUARTZ	获取价格	CMOS Output Clock Oscillator, ROHS COMPLIANT, MINIATURE, SMD, 4 PIN

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