Datasheet > EM4125

EM4125

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
EMMICRO		装置
页数	文件大小	规格书
1页	50K
描述
Read Only Contactless Identification Device with Anticollision

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EM4125 数据手册

EM MICROELECTRONIC - MARIN SA

EM4025/EM4125

Read Only Contactless Identification Device

with Anticollision

Features

Description

The EM4025 is a CMOS integrated circuit for use in

electronic Read Only RF Transponders, often known as a

RFID Tag. The circuit is powered by an external coil

placed in an electromagnetic field, and gets its clock via

the coil terminals. The fixed code device identification is

programmed at manufacture by laser fusing of polysilicon

links. The chip starts at power up in a quiet mode.

Downlink Transmission occurs only on command from the

reader, normally as part of the anticollision/arbitration

scheme. A data rate of 64 or 32 periods of the carrier

frequency per data bit is available. Downlink Data is

Manchester Coded. Only an external coil is needed to

obtain the chip function. A parallel resonant capacitor is

integrated.

•

Anticollision protocol to identify

transponders (better then 20 tags/s at RF/32, 10

tags/s at RF/64)

55 bit memory array, laser programmable ROM

Two mask programmable data rate options: RF/64 and

RF/32

Data transmission reader to transponder: ASK 100%

(OOK)

Data transmission transponder to reader: ASK,

Manchester Code

On chip resonance capacitor

On chip supply buffer capacitor & voltage limiter

Large Modulation Depth

Operating frequency 100 – 150 kHz

Small chip size convenient for implantation

number of

•

The EM4125 is the same device but with bumped

enlarged pads. All specified parameters and description

are applicable for the EM4125 device.

Typical Operating Configuration

Typical Applications

•

Logistics

Manufacturing Automation

Anti-counterfeiting

Industrial transponder

Tracking and tracing

COIL1

EM4025

COIL2

L: typical 20.78 mH value for f_O= 125 KHz

Fig. 1

Phone: +41.32.755-5111, Fax: +41.32.755-5403

www.emmicroelectronic.com

Subject to change without notice

Rev. B, 02/05

info@emmicroelectronic.com

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