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TMS3705DDRQ1

IC RFID READER 134.2KHZ 16SOIC

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See Product Specifications for product details.

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TMS3705DDRQ1

IC RFID READER 134.2KHZ 16SOIC

Orders over $200 are eligible for a limited edition Chinese-style gift.

Orders over $200 are eligible for a limited edition Chinese-style gift.

Orders over $1000 qualify for a $30 shipping fee waiver.

Orders surpassing $5000 enjoy waived shipping and transaction fees.

These offers are applicable to both new and existing customers and are valid from January 1st, 2024, to December 31st, 2024.

  • Manufacturer:

    TI

  • Datasheet:
  • Package/Case:

    SOP-16

  • Product Category:

    RF Integrated Circuits

  • DateCode:

    22+

Submit your quote request now, and we expect to provide a quote within March 06, 2024. Place your order now, and we expect to complete the transaction within March 08, 2024. Ps:Time is according to GMT+8:00.

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Stock:11844 PCS

Our commitment is to deliver prompt quotations within 12 hours. For further assistance, please contact us at [email protected].

TMS3705DDRQ1 Product Details

1.1 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) Packag


1.2 Applications

• Car Access

• Immobilization

• Building Access

• Livestock Reader


1.3 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:


1. The microcontroller and base station IC are supplied with a clock signal derived from only one resonator: The resonator is attached to the microcontroller. The base station IC is supplied with a clock signal driven by the digital clock output of the microcontroller. The clock frequency is either 4 MHz or 2 MHz, depending on the selected microcontroller type.


2. The microcontroller and the base station each have their own resonator. The base station IC has an on-chip PLL that generates a clock frequency of 16 MHz for internal clock supply only. The TMS3705BDRG4 and TMS3705DDRG4 are optimized for higher communication data rates and, therefore, work without frequency measurement during the write phase.

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TMS3705DDRQ1

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