© Semiconductor Components Industries, LLC, 2016
March, 2016 − Rev. 3
1 Publication Order Number:
AX−SIGFOX/D
AX-SIGFOX
Ultra-Low Power,
AT Command Controlled,
Sigfox
)
Compliant
Transceiver IC for Up-Link
and Down-Link
OVERVIEW
Circuit Description
AX−Sigfox is an ultra−low power single chip solution for
a node on the Sigfox network with both up− and down−link
functionality. The AX−Sigfox chip is delivered fully ready
for operation and contains all the necessary firmware to
transmit and receive data from the Sigfox network in
Europe. It connects to the customer product using a logic
level RS232 UART. AT commands are used to send frames
and configure radio parameters.
Features
Functionality and Ecosystem
• Sigfox up−link and down−link functionality controlled
by AT commands
• The AX−Sigfox IC is part of a whole development and
product ecosystem available from ON Semiconductor
for any Sigfox requirement. Other parts of the
ecosystem include
♦ Ready to go AX−Sigfox development kit with fully
functional AX−Sigfox module including Sigfox
subscription
♦ Sigfox Ready
®
certified reference design for the
AX−Sigfox IC
♦ MiniStamp by ON Semiconductor Sigfox modules
with SMA connector or chip antenna
♦ AX−Sigfox−API IC for customers wishing to write
their own application software based on the AXSEM
Sigfox Library
General Features
• QFN40 5 mm x 7 mm package
• Supply range 1.8 V − 3.6 V
• −40°C to 85°C
• Temperature sensor
• Supply voltage measurements
• 10 GPIO pins
♦ 4 GPIO pins with selectable voltage measure
functionality, differential (1 V or 10 V range) or
single ended (1 V range) with 10 bit resolution
♦ 2 GPIO pins with selectable sigma delta DAC
output functionality
♦ 2 GPIO pins with selectable output clock
♦ 3 GPIO pins selectable as SPI master interface
♦ Integrated RX/TX switching with differential
antenna pins
Power Consumption
• Ultra−low Power Consumption:
♦ Charge required to send a Sigfox OOB packet at
14 dBm output power: 0.28 C
♦ Deepsleep mode current: 100 nA
♦ Sleep mode current: 1.3 mA
♦ Standby mode current: 0.5 mA
♦ Continuous radio RX−mode at 869.525 MHz :
10 mA
♦ Continuous radio TX−mode at 868.130 MHz
19 mA @ 0 dBm
49 mA @ 14 dBm
High Performance Narrow−band Sigfox RF Transceiver
• Receiver
♦ Carrier frequency 869.525 MHz
♦ Data−rate 600 bps FSK
♦ Sensitivity
−126 dBm @ 600 bps, 869.525 MHz, GFSK
♦ 0 dBm maximum input power
• Transmitter
♦ Carrier frequency 868.13 MHz
♦ Data−rate 100 bps PSK
♦ High efficiency, high linearity integrated power
amplifier
♦ Maximum output power 14 dBm
♦ Power level programmable in 1 dBm steps
Applications
Sigfox networks up−link and down−link.
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