RA D I O FR E Q U E N C Y ID E N T I F I C A T I O N S Y S T E M S
Remote Access Identification Device IC
TMS37126
The Remote Access Identification Device (RAID) IC combines 3 functions
in one device:
Base station
in the car
Identification
device
3D Analog Front End (3D AFE)
Proven TI DST+ transponder
Sophisticated power management
UHF
UHF
receiver
Control
Unit
The RAID has an SPI interface to connect it to an external
microcontroller, ideally suited for Passive Entry applications. The 3D AFE
is an improved version of the TMS37122/127 devices, and offers high
sensitivity to receive LF signals between 120 kHz and 140kHz and has
several other features, such as RSSI measurement and bi-directional LF
signalling.
µC
LF Trans-
ceiver
LF
The embedded transponder offers a high level of security through its encryption, mutual authentication and after-theft
diagnosis features. It operates without battery and can be accessed in terms of its memory and encryption through the
SPI interface. The power management features, in addition to battery charge/check, a battery backup function that
allows operation of all functions (including the microcontroller) with low or even no battery. The energy in this case is
generated by the LF field.
Specifications:
Part Number
RI-TMS37126
Features
3D Analog Front End with LF bi-directional signaling; RSSI output current; battery back-up
and battery charge functions; compatible with TI’s Digital Signature Transponder (DST).
Supply Voltage ( Vbatt )
3D Analog Front End:
Operating Frequency
Quiescent Current
Standby Current
1.8 V to 3.6 V
120 kHz to 140 kHz
1.4 µA (typ.)
5.3 µA (typ., 3 ant. active); 4.0 µA (typ., 2 ant. active); 2.7 µA (typ., 1 ant. active)
Active Current
28µA (typ.)
Maximum Antenna Sensitivity
Data Rate
4.5 mVpp to 6.0 mVpp; 4.9 mVpp (typ.)
4 kbit/s max.
Wake Pattern Length
Sensitivity Adjustment
Wake / Re-Wake Time
4-bit / 8-bit / 16-bit
Ant1 / Ant2 / Ant3
2 ms
Transponder Transmission Principle HDX (Half Duplex), FDX ( Full Duplex using Amplitude Modulation)
Operating Frequency
Security
134.2 kHz, 125 kHz
TI Challenge / Response; Mutual Authentication; Secure Issuer Access Mode
91-bytes (lockable) for User data, 66 bytes for Encryption Keys, serial#, configuration
-40°C to +85°C
EEPROM Memory
Operating Temperature
Package
30 Pin TSSOP DBT
For more information, contact the sales office or distributor nearest you.
The contact information can be found: http://www.ti.rfid.com
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technical areas, but does not have full access to data concerning the uses and applications of customers products. Therefore, TI assumes no
responsibility for customer product design or for infringement of patents and/or the rights of third parties, which may result from assistance
provided by TI.
© Copyright 2004 Texas Instruments Incorporated.
Data Sheet: 11-07-22-008 Rev.1 08/04