EM4125 데이터 시트보기 (PDF) - EM Microelectronic - MARIN SA

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EM4125

Read Only Contactless Identification Device with Anticollision

EM Microelectronic - MARIN SA 

EM MICROELECTRONIC - MARIN SA

EM4025/EM4125

Read Only Contactless Identification Device

with Anticollision

Features

• Anticollision protocol to identify a number of

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

Typical Applications

• Logistics

• Manufacturing Automation

• Anti-counterfeiting

• Industrial transponder

• Tracking and tracing

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.

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

COIL1

L

EM4025

COIL2

L: typical 20.78 mH value for fO = 125 KHz

Fig. 1

Copyright © 2005, EM Microelectronic-Marin SA

Subject to change without notice

Rev. B, 02/05

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

www.emmicroelectronic.com

info@emmicroelectronic.com

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