The TRF7962A device is
an integrated analog front-end (AFE) and data-framing
device for a 13.56-MHz RFID reader/writer system that
supports ISO/IEC 15693. Built-in programming options make it suitable for a wide range of applications
for proximity and
vicinity identification systems.
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
The TRF7962A device supports data rates 6 kbps and 26 kbps with all framing and synchronization tasks for the ISO protocols onboard. The
device also supports reader/writer mode for NFC Forum tag type 5. NFC Forum tag type 5 is supported
with the built-in protocol decoders used in Direct Mode 2. NFC Forum tag type 1 requires the use of
Direct Mode 0. Other standards and custom protocols can also be implemented by using Direct Mode 0.
Direct Mode 0 lets the user fully control the AFE and also gain access to the raw subcarrier data
or the unframed, but already ISO-formatted, data and the associated (extracted) clock
The receiver system has a dual-input receiver architecture to maximize communication
robustness. The receivers also include various automatic and manual gain control options. The
received signal strength from transponders, ambient sources, or internal levels is available in the
A SPI or parallel interface can be used for the communication between the MCU and the
TRF7962A reader. When the built-in hardware encoders and decoders are used,
transmit and receive functions use a 12-byte FIFO register. For direct transmit or receive
functions, the encoders or decoders can be bypassed so the MCU can process the data in real
The TRF7962A device supports a wide supply voltage range of 2.7 V
to 5.5 V and data communication levels from 1.8 V to 5.5 V for the MCU I/O interface.
The transmitter has selectable output power levels of 100 mW (+20 dBm) or 200 mW (+23
dBm) equivalent into a 50-Ω load when using a 5-V supply and supports OOK and ASK modulation with
selectable modulation depth.
The built-in programmable auxiliary voltage regulator delivers up to 20 mA to supply an
MCU and additional external circuits within the reader system.
To evaluate the latest products in the TRF79xx product family – TRF7970A and TRF7964A –
see the NFC Transceiver Booster Pack.
Tools, Reference Designs, and