TRF7970A Multi-Protocol Fully Integrated 13.56-MHz RFID/NFC Transceiver IC (Rev. F)0 pages

TRF7970A
www.ti.com
SLOS743F – AUGUST 2011 – REVISED JANUARY 2013
MULTI-PROTOCOL FULLY INTEGRATED 13.56-MHz RFID/NEAR FIELD COMMUNICATION
(NFC) TRANSCEIVER IC
Check for Samples: TRF7970A
1 Introduction
1.1
Features
1
• Supports Near Field Communication (NFC)
Standards NFCIP-1 (ISO/IEC 18092) and
NFCIP‑2 (ISO/IEC 21481)
‑
• Completely Integrated Protocol Handling for
ISO15693, ISO18000-3, ISO14443A/B, and
FeliCa
• Integrated Encoders, Decoders, and Data
Framing for NFC Initiator, Active and Passive
Target Operation for All Three Bit Rates
(106 kbps, 212 kbps, 424 kbps) and Card
Emulation
• RF Field Detector With Programmable Wake-Up
Levels for NFC Passive Transponder Emulation
Operation
• RF Field Detector for NFC Physical Collision
Avoidance.
• Integrated State Machine for ISO14443A
Anticollision (Broken Bytes) Operation
(Transponder Emulation or NFC Passive
Target)
• Input Voltage Range: 2.7 VDC to 5.5 VDC
1.2
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• Programmable Output Power: +20 dBm
(100 mW), +23 dBm (200 mW)
• Programmable I/O Voltage Levels From
1.8 VDC to 5.5 VDC
• Programmable System Clock Frequency
Output (RF, RF/2, RF/4) from 13.56-MHz or
27.12-MHz Crystal or Oscillator
• Integrated Voltage Regulator Output for Other
System Components (MCU, Peripherals,
Indicators), 20 mA (Max)
• Programmable Modulation Depth
• Dual Receiver Architecture With RSSI for
Elimination of "Read Holes" and Adjacent
Reader System or Ambient In-Band Noise
Detection
• Programmable Power Modes for Ultra LowPower System Design (Power Down <1 µA)
• Parallel or SPI Interface (With 128-Byte FIFO)
• Temperature Range: -40°C to 110°C
• 32-Pin QFN Package (5 mm x 5 mm)
Applications
Mobile Devices (Tablets, Handsets)
Secure Pairing (Bluetooth, WiFi, Other Paired Wireless Networks)
Public Transport or Event Ticketing
Passport or Payment (POS) Reader Systems
Short-Range Wireless Communication Tasks (Firmware Updates)
Product Identification or Authentication
Medical Equipment or Consumables
Access Control, Digital Door Locks
Sharing of Electronic Business Cards
1.3
Description
The TRF7970A is an integrated analog front end and data-framing device for a 13.56-MHz RFID/Near
Field Communication system. Built-in programming options make it suitable for a wide range of
applications for proximity and vicinity identification systems.
It can perform in one of three modes: RFID/NFC Reader, NFC Peer, or in Card Emulation mode. Built-in
user-configurable programming options make it suitable for a wide range of applications. The TRF7970A
is configured by selecting the desired protocol in the control registers. Direct access to all control registers
allows fine tuning of various reader parameters as needed.
1
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PRODUCTION DATA information is current as of publication date. Products conform to
specifications per the terms of the Texas Instruments standard warranty. Production
processing does not necessarily include testing of all parameters.
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