Challenging the space constraints of many IoT applications

ON Semiconductor has announced a new programmable RF transceiver System in Package (SiP) integrating an advanced RF System-on-Chip (SoC) with all surrounding Bill of Material (including a TCXO).

The AX-SIP-SFEU provides the most integrated Sigfox solution for both uplink (transmit) and downlink (receive) communications.



The device is the first in a new family of SiPs that will be launched over the coming months, providing a comprehensive range of ready-to-use, turnkey radio frequency (RF) solutions to support applications requiring Internet of Things (IoT) connectivity.

With the challenging space constraints of many IoT applications – where, for example, connectivity is needed close to the sensor, ON Semiconductor’s 7 mm x 9 mm x 1 mm SiP transceiver has almost one-third the footprint and is one-tenth the overall size of a module-based solution. This gives engineers much greater design freedom.

Building on the success of the AX-SFEU SoC family and thanks to the integration of all necessary functionality, the AX-SIP-SFEU positions ON Semiconductor with a market leading one-chip solution for Sigfox applications.

Delivered with conformal shielding and pre-certified radio regulatory approvals, the ‘out of the box’ solution helps to simplify design, speed time to market, and reduce overall development cost by allowing customers to focus on their application and antenna design.

Due to the need for long-life from a battery powered solution, a further concern for design engineers working on wireless communications applications is power consumption.

Sigfox’s predictable and claimed lowest energy consumption ‘device-to-cloud’, is complemented by ON Semiconductor’s own ultra-low power design to give the new SiP standby, sleep and deep sleep mode currents of just 0.5 milliamps (mA), 1.3 microamps (mA) and 100 nanoamps (nA) respectively.

The AX-SIP-SFEU connects to the customer product via a simple universal asynchronous receiver transmitter (UART) interface. AT commands are used to send frames and configure radio parameters, with an Application Programming Interface (API) variant available for customers wishing to write their own software.

The new device is part of an ON Semiconductor ecosystem which also comprises a development kit and an integrated IDE for Software developers.