The NRF52840-CKAA-R is a RF Transceiver IC with a built-in MCU, manufactured by Nordic Semiconductor ASA. It operates at a frequency of 2.4GHz and is compatible with the 802.15.4 and Bluetooth protocols. The RF family/standard includes Bluetooth v5.0, Thread, and Zigbee. This IC has a power output of 8dBm and a sensitivity of -103dBm. It features multiple serial interfaces including ADC, I²S, PDM, PWM, SPI, UART, and USB. The voltage supply range is 1.7V to 5.5V. It has a memory size of 1MB Flash and 256kB RAM. The NRF52840-CKAA-R is suitable for applications in RF and wireless communication systems, such as IoT devices, smart home automation, and wireless sensor networks. It is available in a 93-UFBGA package and can be surface mounted.