Datasheet > TMS3705A

TMS3705A

更新时间： 2024-09-14 22:52:59

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
1页	34K
描述
RADIO FREQUENCY I DENTIFICATION SYSTEMS

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TMS3705A 数据手册

RA D I O F R E Q U E N C Y I D E N T I F I C A T I O N SY S T E M S

LF Base Station IC TMS3705A

The LF base station IC TMS3705A allows an efficient development and

production of handheld RFID readers & 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.

The key functions of the base station IC TMS3705A are:

» Self-adapting to transponders with a resonance frequency

between 129 kHz – 140 kHz

» Supports all TI-RFid LF transponder functions

» Asynchronous and synchronous data transmission to the IC

» Power management for 5V operation

» Internal full bridge antenna driver

» PLL for internal clock generation of 16 MHz

» Overcurrent protection of antenna driver

Specifications:

Part Number

RI-TMS3705ADR

Operating Frequency

Operating Voltage

Typical 134.2kHz, FSK

4.5V to 5.5V DC

Charge Phase (without antenna load) typical 8 mA;

max. 20mA

max. 0.2mA

Current Consumption

Sleep Mode (without I/O currents)

typical 15 µA;

Interface to Micro Controller

Antenna Inductivity

Two wire multifunctional serial interface, 15625 baud

400µH - 700µH recommended

-2000V to +2000V

ESD Protection (MILSTD 883)

Operating Temperature

Storage Temperature

Package / Pin count

-40°C to +85°C

-40°C to +100°C (125°C up to 1000hrs over lifetime)

SO 16 (10 mm x 6 mm)

Packing / Delivery

Tape on Reel, 2500 units per reel

TIRIS READER

+5 V

TIRIS TRANSPONDER

+12 V

GND

POWER

SUPPLY

TMS3705A

µC

RS232

DRIVER

RXD

TXD

GND

READER

ANTENNA

RF MODULE

CONTROL MODULE

Sample Set-up of a Transponder System

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.

11-07-22-003 07/02

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