Silicon Labs' new Bluetooth
system-on-chip (SoC), the BG22 family, combines an ultra-low transmit and receive power (3.6 mA TX at 0 dBm, 2.6 mA RX) and a high-performance, low-power Arm Cortex-M33 core (27 µA/MHz active, 1.2 µA sleep), and delivers energy efficiency that can extend coin cell battery life up to ten years.
Expanding Silicon Labs' secure, ultra-low-power Wireless Gecko Series 2 platform, the EFR32BG22 (BG22) SoCs provide developers with an optimized Bluetooth connectivity solution supporting the new Bluetooth 5.2 specification, Bluetooth direction finding and Bluetooth mesh.
Typical applications include Bluetooth mesh low-power nodes, smart door locks, personal healthcare and fitness devices. Asset tracking tags, beacons and indoor navigation also benefit from the SoCs' versatile Bluetooth Angle of Arrival (AoA) and Angle of Departure (AoD) capabilities and sub-one-meter location accuracy.
The EFR32BG22C112 SoC targets high-volume, cost-sensitive applications, providing access to 1 Mbps and 2 Mbps Bluetooth PHYs, along with a 38.4 MHz Arm Cortex-M33 core, 18 GPIOs and 352 kB of flash memory with radio characteristics of 0 dBm transmit (TX) and an industry-leading -99 dBm receive (RX) (1M PHY) sensitivity.
The EFR32BG22C222 SoC targets applications requiring more compute power (with a 76.8 MHz M33 core), more I/O's (26 GPIOs) and higher TX power (+6 dBm).
The EFR32BG22C224 SoC provides IQ sampling for direction finding applications and access to 125 kB and 500 kB Bluetooth LE Coded PHYs, which can increase RX sensitivity to -106 dBm. The SoC increases operating temperature to +125 °C and extends flash memory up to 512 kB to support applications requiring direction finding capabilities or low-power mesh nodes.