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Teilenummer | AX-SIGFOX |
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Beschreibung | Sigfox Compliant Transceiver IC | |
Hersteller | ON Semiconductor | |
Logo | ||
Gesamt 19 Seiten AX-SIGFOX
Ultra-Low Power,
AT Command Controlled,
Sigfox) Compliant
Transceiver IC for Up-Link
and Down-Link
www.onsemi.com
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.
© Semiconductor Components Industries, LLC, 2016
March, 2016 − Rev. 3
1
Publication Order Number:
AX−SIGFOX/D
AX−SIGFOX
DC Characteristics
Table 4. SUPPLIES
Conditions for all current and charge values unless otherwise specified are for the hardware configuration described in the AX−Sigfox
Application Note: Sigfox Compliant Reference Design.
Symbol
Description
Condition
Min Typ Max Units
TAMB
VDDIO
Operational ambient temperature
I/O and voltage regulator supply
voltage
−40 27
1.8 3.0
85
3.6
°C
V
VDDIO_R1
I/O voltage ramp for reset activation;
Note 1
Ramp starts at VDD_IO ≤ 0.1 V
0.1
V/ms
VDDIO_R2
I/O voltage ramp for reset activation;
Note 1
Ramp starts at 0.1 V < VDD_IO < 0.7 V
3.3
V/ms
IDS
ISLP
ISTDBY
Deep sleep mode current
Sleep mode current
Standby mode current
Note 3
AT$P=2
AT$P=1
100 nA
1.3 mA
0.5 mA
IRX_CONT
QSFX_OOB_0
Current consumption continuous RX
Charge to send a Sigfox out of band
message, 0 dBm
AT$SR=1,1,−1
AT$S0
10 mA
0.12 C
QSFX_BIT_0
QSFX_BITDL_0
Charge to send a bit, 0 dBm
Charge to send a bit with downlink
receive, 0 dBm
AT$SB=0
AT$SB=0,1
0.08 C
0.27 C
QSFX_LFR_0
Charge to send the longest possible
Sigfox frame (12 byte) , 0dBm
AT$SF=00112233445566778899aabb
0.14
C
QSFX_LFRDL_0
Charge to send the longest possible
Sigfox frame (12 byte) with downlink
receive, 0 dBm
AT$SF=00112233445566778899aabb,1
0.27
C
QSFX_OOB_14
Charge to send a Sigfox out of band
message, 14 dBm
AT$S0
0.28 C
QSFX_BIT_14
QSFX_BITDL_14
Charge to send a bit, 14 dBm
Charge to send a bit with downlink
receive, 14 dBm
AT$SB=0
AT$SB=0,1
0.20 C
0.35 C
QSFX_LFR_14
Charge to send the longest possible
Sigfox frame (12 byte) , 14 dBm
AT$SF=00112233445566778899aabb
0.39
C
QSFX_LFRDL_14
Charge to send the longest possible
Sigfox frame (12 byte) with downlink
receive, 14 dBm
AT$SF=00112233445566778899aabb,1
0.46
C
ITXMOD0AVG
Modulated Transmitter Current,
Note 2
Pout=0 dBm; average
19.0 mA
ITXMOD14AVG
Modulated Transmitter Current,
Note 2
Pout=14 dBm; average
49.0 mA
1. If VDD_IO ramps cannot be guaranteed, an external reset circuit is recommended, see the AX8052 Application Note: Power On Reset
2. The output power of the AX−Sigfox can be programmed in 1 dB steps from 0 dBm – 14 dBm. Current consumption values are given for a
matching network that is optimized for 14 dBm output. 0 dBm transmission with typically 10 mA can be achieved with other networks that
are optimized for 0 dBm operation.
3. Internal 20 MHz iscillator, voltage conditioning and supervisory circuit running.
www.onsemi.com
6
6 Page AX−SIGFOX
This sends a Sigfox frame containing { 0xAA : 0xBB : 0x12
: 0x34 } without waiting for a response telegram.
AT$CB=0xAA,1
OK
The ‘CB’ command sends out a continuous pattern of bits,
in this case 0xAA = 0b10101010.
AT$P=1
OK
This transitions the device into sleep mode. Out−of−band
transmissions will still be triggered. The UART is powered
down. The device can be woken up by a low level on the
UART signal, i.e. by sending break.
Table 10. COMMANDS
Command
AT
AT$SB=bit[,bit]
AT$SF=frame[,bit]
AT$SO
ATSuint?
ATSuint=uint
AT$IF=uint
AT$IF?
AT$DR=uint
AT$DR?
AT$CW=uint,bit[,uint_opt]
AT$CB=uint_opt,bit
AT$T?
AT$V?
Name
Dummy Command
Send Bit
Send Frame
Manually send out of band
message
Get Register
Set Register
Set TX Frequency
Get TX Frequency
Set RX Frequency
Get RX Frequency
Continuous Wave
Test Mode: TX constant byte
Get Temperature
Get Voltages
Description
Just returns ‘OK’ and does nothing else. Can be used to check com-
munication.
Send a bit status (0 or 1). Optional bit flag indicates if AX−Sigfox
should receive a downlink frame.
Send payload data, 1 to 12 bytes. Optional bit flag indicates if
AX−Sigfox should receive a downlink frame.
Send the out−of−band message.
Query a specific configuration register’s value. See chapter
“Registers” for a list of registers.
Change a configuration register.
Set the output carrier macro channel for Sigfox frames.
Get the currently chosen TX frequency.
Set the reception carrier macro channel for Sigfox frames.
Get the currently chosen RX frequency.
To run emission tests for Sigfox certification it is necessary to send a
continuous wave, i.e. just the base frequency without any modula-
tion. Parameters:
Name
Range
Description
Frequency
800000000− Continuous wave frequency in Hz.
999999999, 0 Use 868130000 for Sigfox or 0 to
keep previous frequency.
Mode
0, 1
Enable or disable carrier wave.
Power
0−14
dBm of signal | Default: 14
For emission testing it is useful to send a specific bit pattern. The
first parameter specifies the byte to send. Use ‘−1’ for a
(pseudo−)random pattern. Parameters:
Name
Range
Decsription
Pattern
0−255, −1
Byte to send. Use ‘−1’ for a
(pseudo−)random pattern.
Mode
0, 1
Enable or disable pattern test mode.
Measure internal temperature and return it in 1/10th of a degree
Celsius.
Return current voltage and voltage measured during the last
transmission in mV.
www.onsemi.com
12
12 Page | ||
Seiten | Gesamt 19 Seiten | |
PDF Download | [ AX-SIGFOX Schematic.PDF ] |
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