R
ADIO
F
REQUENCY
I
DENTIFICATION
S
YSTEMS
LF Base Station IC
TMS3705ADR
The LF base station IC TMS3705ADR allows efficient development and
production of RFID readers for vehicle immobilizers. This base station
IC drives the antenna of a TI-RFid transponder system to send data modulated on the antenna signal, and
to detect and demodulate the response from the transponder. It allows also minimizing the external
component count.
Key functions:
- Low current consumption in sleep mode
- Automatic transponder frequency measurement and adaptation
- Diagnosis function
- Full bridge antenna driver
- Built in band-pass filter and limiter
- Digital FSK demodulator
- High speed data transmission in synchronous mode
- Power on reset
- PLL
- Short circuit protection
- Support of all TI-RFID LF transponder functions
Specifications:
Part Number
Operating Frequency
Operating Voltage
Current Consumption
Interface to Micro Controller
Antenna Inductivity
ESD Protection (MILSTD 883, HBM )
Operating Temperature
Storage Temperature
Package / Pin count
Packing / Delivery
Typical 134.2kHz, FSK
4.5V to 5.5V DC
Charge Phase (without antenna load) typical 8 mA;
Sleep Mode (without I/O currents)
typical 15
碌A(chǔ);
Two wire multifunctional serial interface, 15625 baud
400碌H - 700碌H recommended
-2000V to +2000V
-40擄C to +85擄C
-40擄C to +100擄C (125擄C up to 1000hrs over lifetime)
SO 16 (10 mm x 6 mm)
Tape on Reel, 2500 units per reel
max. 20mA
max. 0.2mA
RI-TMS3705ADR
For more information, contact the sales office or distributor nearest you. This contact information can be found
on our web site at:
http://www.ti-rfid.com
Texas Instruments reserves the right to change its products and services at any time without notice. TI provides customer assistance in various
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.
漏 Copyright 2003 Texas Instruments Incorporated.
11-07-22-003 11/03
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