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TMS3705FDRQ1 +BOM

NFC/RFID Tags & Transponders LF Reader IC

Manufacturer:

Texas Instruments
Mfr.Part #:

TMS3705FDRQ1
Datasheet:

TMS3705FDRQ1 Datasheet (PDF)
Operating Frequency:

134.2 kHz
Maximum Operating Temperature:

+ 85 C
Minimum Operating Temperature:

- 40 C
Mounting Style:

SMD/SMT
EDA/CAD Models:

Request Free CAD Models for TMS3705FDRQ1

TMS3705FDRQ1 General Description

The TMS3705 transponder base station IC is used to drive the antenna of a TI-RFid transponder system, to send data modulated on the antenna signal, and to detect and demodulate the response of the transponder. The response of the transponder is a frequency shift keyed (FSK) signal. The high or low bits are coded in two different high-frequency signals (134.2 kHz for low bits and 123 kHz for high bits, nominal). The transponder induces these signals in the antenna coil according an internally stored code. The energy that the transponder needs to send out the data is stored in a charge capacitor in the transponder. The antenna field charges this capacitor in a preceding charge phase. The IC has an interface to an external microcontroller.

There are two configurations for the clock supply to both the microcontroller and the base station IC:

The base station IC has an on-chip PLL that generates a clock frequency of 16 MHz for internal clock supply only. Only TMS3705DDRQ1 and TMS3705GDRQ1 is recommended in combination with AES transponder products (for example, TRPWS21GTEA or RF430F5xxx). TMS3705EDRQ1 and TMS3705FDRQ1 is recommended for best performance in combination with DST40, DST80, MPT transponders (for example, TMS37145TEAx, TMS37126xx, TMS37x128xx, TMS37x136xx, TMS37x158xx, RI-TRP-DR2B-xx, RI-TRP-BRHP-xx) and cannot be used in combination with AES transponder products.

Key Features

Base station IC for TI-RFid™ RF identification systems
Drives antenna
Sends modulated data to antenna
Detects and demodulates transponder response (FSK)
Short-circuit protection
Diagnosis
Sleep mode supply current: 0.2 mA
Designed for automotive requirements
16-pin SOIC (D) package

Specifications

Product Category	NFC/RFID Tags & Transponders	Operating Frequency	134.2 kHz
Maximum Operating Temperature	+ 85 C	Minimum Operating Temperature	- 40 C
Mounting Style	SMD/SMT	Moisture Sensitive	Yes
Product	Transponder Base Station ICs	Product Type	NFC/RFID Tags & Transponders
Series	TMS3705	Factory Pack Quantity	2500
Subcategory	Wireless & RF Integrated Circuits	Technology	Si