EM MICROELECTRONIC -
MARIN SA
EM4123
Read-only UHF RFID IC
Description
The chip is used in passive UHF read-only transponder
applications. It is powered up by an RF beam transmitted
by the reader, which is received and rectified to generate a
supply voltage for the chip. A pre-programmed code is
transmitted to the reader by varying the amount of energy
that is reflected back to the reader. It implements a robust
and fast anti-collision protocol. The chip is frequency
independent and can be used for RF coupled applications
where reading ranges in excess of 10 m and reading rates
of 120 tags per second at 256 kbit/s can be attained.
The chip is backscattering data using load modulation.
Therefore the reader should be able to detect ASK and
PSK modulated carrier.
Features
Factory programmed 64 bit ID number
High data rate: Up to 256 kbit/s
Frequency independent: Typically used at 869 MHz,
902 - 960 MHz (versions 001 to 099)
On-chip oscillator
On-chip rectifier
Low voltage operation - down to 1.0 V at ambient
temperature
Tag Talk Only protocol (TTO)
Low power consumption
-40° to +85° C operating temperature range
Typical Configuration
Typical Applications
The chip is ideal for applications where long range, high-
speed item identification is required:
Supply chain management
Tracking and tracing
Access control
Asset control
Licensing
Auto-tolling
Animal tagging
Sports event timing
V
SS
A
Benefits
Anti-collision suited for fast moving objects
Very low current consumption, long range solution
Easy to use, only pure CW RFID reader needed (No
dense reader mode issue)
Protocol and coding backward compatible with
EM4122 and EM4222
Low cost solutions
UHF transponders can be implemented using an EM4123
chip and an open dipole antenna.
Ordering Information
The versions below are considered standards and should be readily available. For the other delivery form, please contact
EM Microelectronic-Marin S.A. Please make sure to give the complete part number when ordering.
Part Number
EM4123V002WW11
EM4123V002WS7E
EM4123V004WW11
EM4123V004WS7E
EM4123V005WS11E
Version Number
V002
V002
V004
V004
V005
Package/Die Form
Unsawn wafer
Sawn wafer
Unsawn wafer
Sawn wafer
Sawn wafer
Delivery form/Bumping
No bumps
Gold bumps
No bumps
Gold bumps
Gold bumps
Copyright
©
2009, EM Microelectronic-Marin SA
Subject to change without notice
Rev. A, 01/09
Phone: +41.32.755-5111, Fax: +41.32.755-5403
www.emmicroelectronic.com
info@emmicroelectronic.com
EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
