TRF7960TB Module Description
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TRF7960TB Module Description
The TRF7960TB Evaluation Module (EVM) (see
) allows the software application developer to
become familiar with the functionalities of TRF7960 Multi-Standard Fully Integrated 13.56-MHz RFID
reader IC with the freedom to develop on the Texas Instruments embedded microcontroller development
platform of choice.
The TRF7960TB module also allows customer-driven antenna tuning with onboard coil and
customer-driven antenna form factor design.
The module is hardwired for SPI communications, supports slave select and TRF7960 Direct Mode 2
(default), Direct Mode 1, and Direct Mode 0 operations. The user also has access to and full control over
the TRF7960 EN2 and EN lines, allowing for design and development of ultralow-power high-frequency
(HF) RFID systems.
The module has an onboard boost converter (
) which boosts 3.3 VDC to 5 VDC out to
TRF7960 IC for +23 dBm (full transmitter power out) operations.
An impedance-matching circuit from 4
Ω
to 50
Ω
is populated on the module, and this is connected to a
tuned 50-
Ω
antenna circuit that consists of an onboard four-turn coil with series and parallel passive
elements (capacitors and a resistor).
Test points are available on the board for checking firmware operations with oscilloscope or logic
analyzer, impedance matching, and for attaching an external antenna.
Connection to Texas Instruments microcontroller platforms are made via Samtec EM headers located on
the back of the board (connectors P1/RF1 and P2/RF2).
Figure 1. TRF7960TB Evaluation Module
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TRF7960TB HF RFID Reader Module
SLOU297 – October 2010
Copyright © 2010, Texas Instruments Incorporated
