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TMS3705DDRQ1

RFID Reader IC 134.2kHz 4.5V ~ 5.5V 16-SOIC (0.154", 3.90mm Width)

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TMS3705DDRQ1 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.

tms3705ddrq1 TMS3705DDRQ1

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
TMS3705DDRQ1 TMS3705DDRQ1

Specifications

Frequency range 134.2 kHz Standard ISO 11785
Operating temperature range (°C) -40 to 85 Rating Automotive
Transmission principle HDX - FSK

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Ratings and Reviews

More
L
L**m 02/17/2023

As described. I recommend.

2
J
J**e 01/11/2023

It works properly so far.

7
E
E**a 09/29/2021

All right, thanks to the seller! From the payment of the order to its receipt has passed 18 days :)

13

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TMS3705DDRQ1 Datasheet PDF

Preliminary Specification TMS3705DDRQ1 PDF Download

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