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Sigfox-certified wireless transceiver SoCs, in distribution

Sigfox-certified wireless transceiver SoCs, in distribution

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By eeNews Europe



From AXSEM, an ON Semiconductor company, the AX-Sigfox and AX-Sigfox-API SoC devices comprise an ultra low power AXSEM 8052 microcontroller and an AXSEM AX5043 wireless transceiver, and are certified as being Class 0 "Sigfox Ready" denoting they are available for immediate operation as a Sigfox node. Controlled through a UART, the AX-Sigfox SoC can instigate connectivity with a host MCU by using the AT modem command set.

For straightforward IoT applications where the designer wishes to implement a single-chip solution and save the cost of a host MCU, such as a thermostat or actuator, the AX-Sigfox-API IC provides a solution. User application software can be run on the AX8052 MCU taking full advantage of the microcontroller’s peripheral features that include an SPI Master, GPIO, an RTC, a 10-bit 500 ksps ADC and a temperature sensor. The SoC has 64 kB of flash memory of which 32 kB is available for a user application.

Sleep current of either device is down to 950 nA up to 45 mA when transmitting at 14 dBm output power. The receiver has a sensitivity of -129 dBm measured at a data rate of 600 bps with a power consumption of 10 mA. The supply voltage can be in the range of 1.8 to 3.6 VDC.

When using the AX-Sigfox reference design a complete Sigfox node transceiver can occupy a board area of 20 x 13 mm, with minimal supporting circuitry and additional cost.

Alpha Micro Components; www.alphamicro.net

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