Overview
The TRF7961RHBRG4 is a highly integrated analog front end and data-framing system designed for 13.56-MHz RFID reader applications. Produced by Texas Instruments, this device supports multiple protocols including ISO/IEC 14443 A and B, FeliCa™, and ISO/IEC 15693. It is configured by selecting the desired protocol in the control registers, allowing for fine-tuning of various reader parameters. The TRF7961RHBRG4 is suitable for a wide range of applications in proximity and vicinity identification systems due to its built-in programming options and high integration level.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Frequency | 13.56 MHz |
| Operating Temperature Range | -40°C to +110°C |
| Supply Voltage | 2.7 V to 5.5 V |
| Interface | SPI (Serial Peripheral Interface) |
| Package/Case | 32-VFQFN Exposed Pad |
| Standards | ISO 14443, ISO 15693, ISO 18000-3 |
| Output Power | 100 mW (+20 dBm) or 200 mW (+23 dBm) |
| Modulation | OOK and ASK with selectable modulation depth |
| Mounting Style | SMD/SMT |
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
Key Features
- Completely integrated protocol handling for ISO/IEC 14443 A and B, FeliCa™, and ISO/IEC 15693.
- Separate internal high-PSRR power supplies for analog, digital, and PA sections to provide noise isolation.
- Dual receiver inputs with AM and PM demodulation to minimize communication holes.
- Receiver AM and PM RSSI (Received Signal Strength Indicator).
- Reader-to-reader anticollision support.
- High integration reduces total BOM and board area.
- Single external 13.56-MHz crystal oscillator.
- MCU-selectable clock-frequency output of RF, RF/2, or RF/4.
- Adjustable 20-mA high-PSRR LDO for powering external MCU.
- Ultra-low-power modes: Power Down (<1 µA), Standby (120 µA), Active (RX Only: 10 mA).
- Parallel 8-bit or serial 4-pin SPI interface with MCU using 12-byte FIFO.
- Ultra-small 32-pin QFN package (5 mm × 5 mm).
- Automatically configured default modes for each supported ISO protocol.
- 12 user-programmable registers.
- Selectable receiver gain and programmable output power.
- Built-in receiver band-pass filter with user-selectable corner frequencies.
Applications
The TRF7961RHBRG4 is designed for various applications in proximity and vicinity identification systems, including:
- RFID reader systems for inventory tracking and management.
- Access control systems in commercial and industrial settings.
- Smart cards and payment systems.
- Healthcare and medical device identification.
- Automotive and industrial automation systems.
Q & A
- What is the operating frequency of the TRF7961RHBRG4?
The operating frequency is 13.56 MHz.
- What protocols does the TRF7961RHBRG4 support?
The device supports ISO/IEC 14443 A and B, FeliCa™, and ISO/IEC 15693.
- What is the supply voltage range for the TRF7961RHBRG4?
The supply voltage range is from 2.7 V to 5.5 V.
- What interface does the TRF7961RHBRG4 use for communication with the MCU?
The device uses a Serial Peripheral Interface (SPI) or parallel 8-bit interface.
- What are the output power levels of the TRF7961RHBRG4?
The output power levels are 100 mW (+20 dBm) or 200 mW (+23 dBm).
- What modulation types are supported by the TRF7961RHBRG4?
The device supports OOK and ASK modulation with selectable modulation depth.
- What is the package type of the TRF7961RHBRG4?
The package type is 32-VFQFN Exposed Pad.
- What are the ultra-low-power modes of the TRF7961RHBRG4?
The ultra-low-power modes include Power Down (<1 µA), Standby (120 µA), and Active (RX Only: 10 mA).
- Does the TRF7961RHBRG4 support reader-to-reader anticollision?
Yes, it supports reader-to-reader anticollision.
- What is the operating temperature range of the TRF7961RHBRG4?
The operating temperature range is from -40°C to +110°C.
- Is the TRF7961RHBRG4 RoHS compliant?
Yes, the device is lead free and RoHS compliant.
