Specifications
| Type | Description |
|---|---|
| Part Number | TRF7970 |
| Manufacturer | Texas Instruments |
| Product Type | NFC/RFID transceiver IC |
| Category | RF_Wireless |
| Package / Case | 32-pin VQFN (RHB), 5 mm x 5 mm body |
| Operating Frequency | 13.56 MHz |
| Supported NFC Standards | NFCIP-1 (ISO/IEC 18092), NFCIP-2 (ISO/IEC 21481) |
| Supported RFID / Proximity Standards | ISO/IEC 15693, ISO/IEC 18000-3, ISO/IEC 14443 A and B, FeliCa |
| Supported NFC Operation Modes | Reader/writer, peer-to-peer, card emulation |
| Maximum Supported Data Rate | 848 kbps; reader/writer mode only |
| NFC Initiator Data Rates | 106 kbps, 212 kbps, 424 kbps |
| NFC-A / NFC-B Reader/Writer Bit Rates | 106, 212, 424, 848 kbps |
| NFC-A / NFC-B Card Emulation Bit Rate | 106 kbps |
| NFC-A Peer-to-Peer Target Bit Rate | 106 kbps |
| NFC-F Reader/Writer Bit Rates | 212, 424 kbps |
| NFC-F Peer-to-Peer Target Bit Rates | 212, 424 kbps |
| NFC-V Reader/Writer Bit Rates | 6.7, 26.7 kbps |
| Input Voltage Range | 2.7 VDC to 5.5 VDC |
| MCU I/O Voltage Range | 1.8 V to 5.5 V |
| Programmable I/O Voltage Range | 1.8 VDC to 5.5 VDC |
| Transmit Output Power | +20 dBm / 100 mW or +23 dBm / 200 mW |
| Modulation Types | OOK and ASK |
| Power-Down Current | <1 uA |
| Power Modes | 8 selectable power modes |
| Auxiliary Regulator Output Current | 20 mA max |
| Interface Options | SPI or parallel interface |
| FIFO Size | 127 bytes |
| System Clock Output Frequencies | RF, RF/2, RF/4 |
| SYS_CLK Options with 13.56-MHz Crystal | Off, 3.39 MHz, 6.78 MHz, 13.56 MHz |
| SYS_CLK Options with 27.12-MHz Crystal | Off, 6.78 MHz, 13.56 MHz, 27.12 MHz |
| Temperature Range | -40°C to 110°C |
| Receiver Architecture | Dual-input receiver with RSSI |
| RX Inputs | RX_IN1 main input, RX_IN2 auxiliary input |
| Internal Analog Supply Output | 2.7 V to 3.4 V |
| Internal RF Supply Output | 2.7 V to 5 V |
| Bandgap Reference Voltage | 1.6 V |
| Datasheet Status | request_only |
Product Overview
The TRF7970 is a Texas Instruments NFC/RFID transceiver IC for 13.56 MHz systems in the RF_Wireless category. It integrates protocol handling for NFCIP-1, NFCIP-2, ISO/IEC 15693, ISO/IEC 18000-3, ISO/IEC 14443 A and B, and FeliCa, with operating modes covering reader/writer, peer-to-peer, and card emulation.
The device supports ISO reader/writer operation up to 848 kbps, with NFC initiator data rates of 106 kbps, 212 kbps, and 424 kbps. NFC-A and NFC-B reader/writer modes support 106, 212, 424, and 848 kbps, while card emulation and NFC-A peer-to-peer target operation use 106 kbps. NFC-F supports 212 and 424 kbps, and NFC-V reader/writer operation supports 6.7 and 26.7 kbps.
The package case is a 32-pin VQFN (RHB) with a 5 mm x 5 mm body. Electrical parameters include a 2.7 VDC to 5.5 VDC VIN input range, 1.8 V to 5.5 V MCU I/O levels, transmit output power options of +20 dBm or +23 dBm into 50 ohms with a 5 V supply, and operation from -40°C to 110°C.
Key Features
- 13.56 MHz NFC/RFID carrier frequency operation
- NFCIP-1 and NFCIP-2 standard support
- ISO 15693, ISO 18000-3, ISO 14443, FeliCa support
- Reader/writer, peer-to-peer, and card emulation modes
- Up to 848 kbps in reader/writer mode
- 2.7 VDC to 5.5 VDC supply input
- 1.8 V to 5.5 V MCU I/O levels
- SPI or parallel MCU interface options
- 127-byte FIFO for transmit and receive functions
- Dual-input receiver with RSSI capability
- OOK and ASK transmitter modulation
- Power-down current below 1 uA
Typical Applications
- 13.56 MHz NFC readers
- RFID reader/writer systems
- ISO 14443 A/B interfaces
- ISO 15693 proximity systems
- FeliCa reader applications
- NFC peer-to-peer devices
- NFC card emulation designs
- Low-power embedded RFID systems
Procurement Notes
When requesting a quote for TRF7970, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What carrier frequency does the TRF7970 use?
The TRF7970 operates at the 13.56 MHz NFC/RFID system carrier frequency. This frequency is used with the supported NFC and RFID standards listed for the device.
Which NFC operation modes are supported by TRF7970?
The TRF7970 supports reader/writer, peer-to-peer, and card emulation modes for 13.56 MHz NFC/RFID systems. These modes are tied to its integrated NFC and RFID protocol handling.
What interface options connect the TRF7970 to an MCU?
The TRF7970 communicates with an MCU through either an SPI interface or a parallel interface. Its MCU I/O communication levels support a 1.8 V to 5.5 V range.
What package is used for the TRF7970?
The TRF7970 package case is a 32-pin VQFN, Texas Instruments RHB package, with a 5 mm x 5 mm body.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.