Perfect for proprietary solutions

The manufacturer enables custom radio solutions in the 2402 to 2480MHz frequency range to be developed with this module, which comes without firmware and a software development kit (SDK). Applications range from the widely used Bluetooth LE for specific use to proprietary, highly customised radio protocols.

Ophelia-III is based on the nRF52840 chipset from Nordic Semiconductor, a 32-bit ARM Cortex M4F CPU, and is equipped with 1MB of flash memory, 256kB RAM, and various interfaces (UART, SPI, I²C, ADC, 17 GPIOs, Nano-SIM). The module, measuring 12 × 8 × 2mm, is compact than comparable models on the market. Thanks to its optimised antenna design, it features low power consumption at a transmission power up to +8dBm. In sleep mode, the current drawn is just 0.4µA – making the module ideal for battery-powered devices. Würth Elektronik places particular importance on providing freedom in application development with this radio module. Ophelia-III has both an antenna connector and an internal antenna, as well as 17 configurable GPIOs.

The radio module is based on the same hardware platform as the proven Proteus-III Bluetooth LE module, whose certification documents can be reused to certify Ophelia-III solutions. An evaluation board and an SDK are available for application development.