Specifications

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Wireless Connectivity Guide Texas Instruments 4Q 2014
NFC/RFID
TRF796x
The TRF796x is a pin compatible,
high performance 13.56-MHz HF
RFID Reader IC family comprising an
integrated analog front end (AFE) and a
built in data-framing system for
ISO/IEC 15693, ISO/IEC 18000-3,
ISO/IEC 14443A and B. This includes
data rates up to 848kbits for ISO/IEC
14443 with all framing and synchroni-
zation tasks on board. This architec-
ture enables the customer to build
a complete reader using only a low
end microcontroller. Other standards
and even custom protocols can be
implemented by using the various
Direct Modes of the device. The
Direct Modes allow the user to get
access to the Sub-Carrier Data or to
the unframed, however already ISO
Formatted Data stream. A parallel
or serial interface (SPI) can be used
for the communication between the
Microcontroller and the TRF796x. The
transmitter has selectable output-
powerlevelsof100mW(+20dBm)or
200mW(+23dBm)equivalentintoa
50 Ohm load when using a 5V supply.
The receiver system enables AM and
PM demodulation using a dual-input
architecture to minimize communica-
tion holes. The reader 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.
Key features
• ISO14443A/B,ISO15693,FeliCa,
Mifare
• Supplyvoltagerange:2.7–5.5V
• Paralleldatacommunicationorserial
4-pin SPI interface
• Integrateddataframing,CRCand/or
parity checking
• Multiplesub-carrierreceivingand
decoding compatibility
• Dataratessupportedupto848kHz
• Integratedvoltageregulatorsfor
MCU supply (20 mA)
• ClockoutputforMCU
• SelectablereceivegainwithAGC
• AntennadriverusingOOKorASK
modulation
• Programmableoutputpower,
100 mW and 200 mW
• 7userselectablepowermodes
13.56-MHz Reader/Writer Transceiver ICs
TRF7960, TRF7960A, TRF7961, TRF7962A, TRF7963A, TRF7964A
Get samples, evaluation modules and application notes at: www.ti.com/nfc
General Characteristics
Part Number
TRF7960
TRF7960A
TRF7964A
TRF7961
TRF7962A TRF7963A
Operatingfrequency 13.56MHz
Supportedprotocols
ISO/IEC15693,
ISO/IEC18000-3
ISO/IEC14443A
ISO/IEC14443B
ISO/IEC15693,
ISO/IEC18000-3
ISO/IEC14443A
ISO/IEC14443B
Operatingvoltage 2.7to5.5VDC
Currentconsumption
Transmit:200mWat120mA,typ.
100mWat70mA,typ.
Active(RXonly):10mA,typ.
Stand-by:120μA
Powerdown:<1μA
Transmitterpower
Adjustablepower,100mWor
200mWat5VDC
Transmittermodulation ASK,adjustable8%to30%OOK
Communicationinterface Parallel8-bitor4-wireSPI
Operatingtemperature –40˚Cto+110˚C
Storagetemperature –55˚Cto+150˚C
Package 32-pinQFN,(5mm×5mm)
Packing/delivery Tape-onReel,250or3000perreel
Benefits
• Easytousewithhighflexibility
• Completelyintegratedprotocol
handling
• Auto-configureddefaultmodesfor
each supported ISO protocol
• Separateinternalhigh-PSRRpower
supplies for analog, digital, and PA
sections provide noise isolation for
superior read range and reliability
• DualreceiverinputswithAMandPM
demodulation to minimize
communication holes
• ReceiverAMandPMRSSI
• HighintegrationreducestotalBOM
and board area
• Ultra-low-powermodes
• Powerdown<1µA
• Standby120µA
Applications
• 13.56-MHzRFIDreader
• Accesscontrol
• POScontactlesspayment
• PrepaideMetering
• Medicalequipment
• Productidentification/authorization
(consumables)
Development tools and software
• TRF7960AEVM–EvaluationKit
• TRF7960ATBtargetboard for
MSP-EXP430F5438Aboard,ARM
®
Cortex
®
-M3 based DK-LM3S9BD96
board, or any other TI embedded
microcontroller platform with the EM
socket headers populated.
For more information on transponders
and inlays please visit
www.ti.com/hf-transponders
TRF7960 block diagram.
Matching
TX_OUT
V
SS
V
IN
Supply: 2.7 V - 5.5 V
V
DD_I/O
V
DD
Serial or
Parallel
RX_IN
1
RX_IN
2
Crystal
13.56 MHz
TRF796x
uC / MSP430