Overview
The TMS3705ADR, produced by Texas Instruments, is a Low Frequency (LF) base station IC designed for use in TI-RFid RF identification systems. This IC is crucial for driving the antenna, sending data modulated on the antenna signal, and detecting and demodulating the response from the transponder. It is particularly suited for applications requiring robust and reliable RFID communication, such as car access, immobilization, building access, and livestock tracking.
Key Specifications
| Characteristic | TMS3705ADR |
|---|---|
| Data Rate (Maximum) | 8 kbps |
| Frequency | 134.2 kHz |
| Required Antenna Inductance | 100 to 1000 µH |
| Supply Voltage | 4.5 to 5.5 Vdc |
| Transmission Principle | HDX, FSK |
| Package Type | 16-pin SOIC (D) |
| Sleep Mode Supply Current | 0.2 mA |
Key Features
- Base station IC for TI-RFid RF identification systems
- Drives the antenna and sends modulated data to the antenna
- Detects and demodulates transponder response (FSK)
- Short-circuit protection and diagnosis capabilities
- Low current consumption in sleep mode (0.2 mA)
- Designed to meet automotive requirements
- Interface to an external microcontroller
- Digital FSK demodulator and full bridge antenna driver
Applications
- Car Access and Immobilization
- Building Access Control
- Livestock Tracking and Identification
Q & A
- What is the primary function of the TMS3705ADR IC?
The TMS3705ADR IC is used to drive the antenna of a TI-RFid transponder system, send data modulated on the antenna signal, and detect and demodulate the response from the transponder.
- What frequency does the TMS3705ADR operate at?
The TMS3705ADR operates at a frequency of 134.2 kHz.
- What is the required antenna inductance for the TMS3705ADR?
The required antenna inductance is between 100 to 1000 µH.
- What is the supply voltage range for the TMS3705ADR?
The supply voltage range is 4.5 to 5.5 Vdc.
- What transmission principle does the TMS3705ADR use?
The TMS3705ADR uses HDX and FSK transmission principles.
- What is the package type of the TMS3705ADR?
The package type is a 16-pin SOIC (D).
- What is the sleep mode supply current of the TMS3705ADR?
The sleep mode supply current is 0.2 mA.
- What are some key applications of the TMS3705ADR?
Key applications include car access and immobilization, building access control, and livestock tracking.
- Does the TMS3705ADR have any protection features?
Yes, it includes short-circuit protection and diagnosis capabilities.
- How does the TMS3705ADR interface with an external microcontroller?
The TMS3705ADR has an interface to an external microcontroller through various control and data pins, such as TXCT and SCIO.
