TRF7970A Datasheet, PDF (1/85 Pages) Texas Instruments – MULTI-PROTOCOL FULLY INTEGRATED 13.56-MHz RFID/NEAR FIELD COMMUNICATION

TRF7970A
www.ti.com
SLOS743B – AUGUST 2011 – REVISED MARCH 2012
MULTI-PROTOCOL FULLY INTEGRATED 13.56-MHz RFID/NEAR
FIELD COMMUNICATION (NFC) TRANSCEIVER IC
Check for Samples: TRF7970A
1 Introduction
1.1 Features
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• 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
• 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 Low-
Power 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)
1.2 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.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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.
Copyright © 2011–2012, Texas Instruments Incorporated