Aimed at conventional IoT applications, the ISP1907-LL RF module from Insight SiP provides Bluetooth 5.1 communication for long-range direction-finding connectivity. Angle of arrival and angle of departure are the core concepts of the Bluetooth 5.1 direction-finding capabilities and enable indoor positioning, while the ISP1907-LL’s long-range capabilities allow wireless connectivity over an open field range of up to 400 meters between modules.
The compact 8×8×1-mm module with its integrated antenna runs on a coin cell battery, which can last up to several years, for use in medical, healthcare, sport, fitness, and industrial devices, as well as home automation and beacons. Based on a Nordic Semiconductor nRF52811 2.4-GHz wireless system-on-chip and a 32-bit ARM Cortex M4 CPU, the ISP1907-LL supports multiple protocols, including BLE, ANT/ANT+, Thread, Zigbee, and proprietary 2.4-GHz protocols such as Nordic’s Gazell. In addition, the device works with a variety of stacks that are free for downloading, including fully qualified BLE stacks for the nRF52 SoC that operate with S112/S132 SoftDevices.
The ISP1907-LL packs 192 kbytes of flash and 24 kbytes of SRAM, along with 13 configurable GPIOs, including three ADCs. It also integrates 32-MHz and 32-kHz clocks. Module prototypes are available now. Volume production will start in Q4 2019.
>> This article was originally published on our sister site, EDN: “RF module offers Bluetooth direction finding.”