Overview
The TMS3705A1DRG4 is a Transponder Base Station IC produced by Texas Instruments. This IC is designed for use in Radio Frequency Identification (RFID) systems, specifically within the TI-RFid™ family. It plays a crucial role in driving the antenna of the RFID system, modulating data onto the antenna signal, and detecting and demodulating the response from the transponder. The device is particularly suited for applications requiring robust and reliable RFID functionality, such as automotive, access control, and livestock tracking.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | TMS3705A1DRG4 |
| Manufacturer | Texas Instruments |
| Package Type | 16-pin SOIC (D) |
| Body Size | 9.9 mm × 3.91 mm |
| Operating Voltage | 4.5V to 5.5V |
| Frequency | 134.2 kHz (low bits), 123 kHz (high bits) |
| Clock Frequency | 4 MHz or 2 MHz (depending on microcontroller) |
| Sleep Mode Supply Current | 0.2 mA |
| Interface | Interface to external microcontroller |
Key Features
- Drives the antenna of a TI-RFid transponder system
- Sends data modulated on the antenna signal
- Detects and demodulates the response of the transponder (FSK signal)
- Short-circuit protection
- Diagnosis capabilities
- Sleep mode with low supply current (0.2 mA)
- Designed for automotive requirements
- On-chip PLL generating a 16 MHz internal clock frequency
- Control logic with mode control register for programmable frequency divider
Applications
- Car Access and Immobilization
- Building Access Control
- Livestock Reader Systems
- Other RFID-based applications requiring robust and reliable communication
Q & A
- What is the primary function of the TMS3705A1DRG4?
The primary function is to drive the antenna of a TI-RFid transponder system, modulate data onto the antenna signal, and detect and demodulate the response from the transponder. - What is the operating voltage range of the TMS3705A1DRG4?
The operating voltage range is 4.5V to 5.5V. - What frequencies does the TMS3705A1DRG4 operate at?
The device operates at frequencies of 134.2 kHz for low bits and 123 kHz for high bits. - What type of package does the TMS3705A1DRG4 come in?
The device comes in a 16-pin SOIC (D) package. - Does the TMS3705A1DRG4 have any protection features?
Yes, it includes short-circuit protection. - What is the sleep mode supply current of the TMS3705A1DRG4?
The sleep mode supply current is 0.2 mA. - Is the TMS3705A1DRG4 designed for automotive use?
Yes, it is designed to meet automotive requirements. - How does the TMS3705A1DRG4 interface with other components?
The device has an interface to an external microcontroller. - What is the role of the on-chip PLL in the TMS3705A1DRG4?
The on-chip PLL generates a 16 MHz internal clock frequency for the device. - Can the frequency divider be programmed in the TMS3705A1DRG4?
Yes, the frequency divider can be programmed using the mode control register.
