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new products
62 l New-Tech Magazine
STMicroelectronics and
SAG Cooperate to Deliver
High-Performance, Tiny NFC
Tags for IoT Applications
STMicroelectronics (NYSE: STM),
a global semiconductor leader
serving customers across the
spectrumof electronics applications,
and Securitag Assembly Group
(SAG), a leading supplier of
RFID transponders announced
a tiny NFC Ferrite Tag that uses
STMicroelectronics’ ST25 NFC tag
IC for IoT (Internet of Things) data-
transmission applications.
Small, light, and thin, the NFC
Ferrite Tag can be surface–
mounted during production through
the metal pad that can be directly
soldered to the PCB surface. In
addition, the NFC Ferrite tag can
function when placed on metal
products because of its anti-metallic
interference characteristics. These
features make it highly attractive for
IoT data-transmission applications
in consumer electronics, wearable
devices, and smart healthcare
products. The tiny NFC Ferrite
Tag perfectly suits the need for
smaller, thinner, and lighter design
for wearable products where
compactness is critical.
Along with its small dimensions (4.9
x 3.0 x 2.5 mm), the NFC Ferrite
Tag with an embedded antenna
demonstrates outstanding RF
performance, benefiting from ST’s
state-of-the-art ST25TA02K NFC
Forum Type 4 tag IC with built-in
NDEF (NFCDataExchange Format)
message support. This allows the
NDEF data to be directly executed
through an Android NFC phone
without any dedicated application
software. In addition to NDEF
support, the ST25TA02K features a
20-bit counter and 128-bit password
to protect read / write access to the
2Kbit EEPROM memory.
Manufacturers will ship as many
as 2.2 billion NFC-enabled
smartphones by 2020 according
to IHS Technology (Market Insight,
NFC-enabled Handset Shipments
to Reach Three-Quarters of a Billion
in 2015, June 2015). The growing
momentum for NFC is expected
to drive new IoT and wireless
applications in the Smart Home,
Smart Healthcare/ Medical, Smart
City, and Smart Factory. With ST’s
global reach and semiconductor
leadership, combined with SAG’s
professional manufacturing of
RFID tags, the two companies
aim to accelerate innovation and
new product development that
strengthens the competitiveness of
their customers’ final products.
Two-Channel, Bi-
Directional Digital Isolators
Reduce Space and System
Complexity for Designers
Designers can save space and
achieve more flexible designs with
theMAX14933 and MAX14937
two-channel, bi-directional digital
isolators from Maxim Integrated
Products, Inc. (NASDAQ: MXIM).
They transfer digital signals between
circuits in both directions and
provide complete galvanic isolation
between two power domains, all
while using fewer components to
save board space.
More information about the
MAX14933 ›
More information about the
MAX14937 ›
A schematic is available for
download ›
A hi-res image is available for
download ›
The MAX14933 and MAX14937 are
the newest additions to Maxim’s
recently introduced ultra-robust
portfolio of quad-channel digital
isolators, which include MAX14930–
MAX14932
and
MAX14934–
MAX14936. These devices provide
best-in-class speed, propagation
delay, skew, and jitter for timing
sensitive
applications
while
maintaining an extremely robust
isolation barrier between two power
domains.
Digital isolators are replacing
optocouplers in many applications
because they offer the same
isolation capabilities while using
less board space and consuming
less power. The MAX14933 and
MAX14937 provide high voltage
isolation of 2.75kVRMS or 5kVRMS,
respectively. They support data
rates from DC up to 1.7MHz and
can be used in isolated I2C busses
with or without clock stretching.
Both products feature independent
2.25V to 5.5V supplies on each side
of the isolator, and provide open-
drain channels for applications that
require data to be transmitted in