Silicon Labs, a developer of low-power wireless connectivity technologies, has introduced a Bluetooth 6 system-on-chip designed for battery-powered Internet of Things applications. The BG2B combines Bluetooth Channel Sounding, hardware-based security and integrated peripherals in a single device intended to reduce power consumption, external component requirements and overall system size.
Built around an 80 MHz Arm Cortex-M33 processor, the wireless SoC supports up to 1 MB of flash memory and 128 kB of RAM. A dual-output buck DC-DC architecture and multicore design are used to manage power across active, receive and sleep operating modes. Silicon Labs identifies BG2B as the lowest-power Bluetooth device in its current portfolio.
Compared with the company’s previous lowest-power Bluetooth LE SoC, BG2B provides 14% to 15% lower MCU active current, along with lower Bluetooth receive current. Its EM2 DeepSleep current is 1.1 µA with 16 kB of RAM retention and the real-time clock operating from an external low-frequency crystal. With all 128 kB of RAM retained under the same clock configuration, the specified EM2 current is 1.5 µA.
The Silicon Labs BG2B Bluetooth 6 wireless SoC integrates Channel Sounding, hardware-based security, CAN FD, LED controls and dual ADCs for battery-powered IoT applications ranging from asset tracking and smart retail to industrial monitoring and vehicle diagnostics.
“Bluetooth LE is moving beyond basic connectivity into secure ranging, proximity awareness, and location-aware experiences, while customers still need the low power, small form factor, and cost efficiency that made Bluetooth the foundation of battery-powered IoT,” said Daniel Cooley, SVP and CTO, Silicon Labs. “BG2B brings these requirements together in a single platform, combining our lowest-power Bluetooth LE architecture to date with advanced Channel Sounding, Secure Vault™ High security, and integrated peripherals that help customers build more capable, connected products with fewer external components.”
Bluetooth Channel Sounding allows connected devices to estimate the distance between one another using phase-based ranging, round-trip timing or a combination of the two. BG2B supports Mode 3, Normalized Attack Detector Metric and Inline Phase Correction Term. The device is also designed to meet Apple and Google Bluetooth Channel Sounding specifications, while Silicon Labs provides a royalty-free ranging library, development software, tools and engineering support.
Peripheral integration includes CAN FD for wireless diagnostics and monitoring in commercial vehicles, industrial equipment and fleet-management applications. An LED boost function and four-channel LED sink can reduce the need for external LED driver circuitry in electronic shelf labels, smart retail equipment and other battery-powered products using RGBW status indicators. Dual 12-bit analog-to-digital converters allow two analog signals to be sampled simultaneously, while Variable Resistive Load capabilities support battery health and remaining-capacity estimation.
Secure Vault High provides hardware-based protection for device identity, firmware, cryptographic keys and other sensitive information. Its features include a hardware root of trust, secure boot, secure key management, secure debugging, anti-tamper capabilities and differential power analysis countermeasures. BG2B is designed for PSA Level 3 certification and can be combined with the Silicon Labs Custom Part Manufacturing Service to provision device identities, certificates and cryptographic credentials during manufacturing.
Target applications include secure ranging, asset tracking, electronic shelf labels, smart home products, industrial monitoring, wireless sensors, smart locks, remote controls, wearables and vehicle diagnostics. BG2B SoCs are currently available through an early customer engagement program, with initial production hardware and modules planned for 2027.
About Silicon Labs
Silicon Labs develops low-power wireless connectivity technologies for embedded and Internet of Things applications. Its semiconductor, software and development platforms support smart home, industrial IoT, smart city and other connected-device markets. For more information, please click here.
Source/Photo Credit: Silicon Labs
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Molly Bakewell Chamberlin is the Founder, Publisher and Editor-in-Chief of Components Source Network, a 100% woman- and disability-owned B2B publishing and expert marketplace platform serving the global high-tech manufacturing and engineering community. She is the architect, author and developer of the Network’s 11 specialized e-news sites and 11 peer-vetted expert e-marketplaces, including Electronics Industry Monthly. With more than 25 years of experience in strategic technical marketing, public relations and business development, she is also the Founder and President of Embassy Global, LLC, which has supported more than 200 high-tech industry brands worldwide since 2008. Molly also serves pro bono as Second Vice Chair of the Government Team for the WBENC Forum and is a long-standing advocate for small business, supplier diversity, sustainability and women in STEM. Connect with Molly on LinkedIn.
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