nRF21540

nRF21540 Product Specification v1.0 4446_194 v1.0 / 2020-08-20 Key features Key features: Front-end module with RF PA and LNA ® Supports Bluetooth Low Energy, IEEE 802.15.4, and proprietary applications Max output power 22 dBm Adjustable output power to ±1 dB from 5 to 21 dBm User programmable modes for TX gain Non-volatile memory storage for gain settings Dual antenna port with antenna diversity support Receive gain +13 dB Single-ended 50 Ω matched input and output 110 mA @ +20 dBm output power 38 mA @ +10 dBm output power Control interface via I/O, SPI, or a combination of both Supply voltage 1.7 to 3.6 V, suitable for 1.8 V ±5% systems Operating temperature -40°C to 105°C Package variant QFN16 4 x 4 mm Applications: Smart Home applications Industrial and factory automation Asset tracking Advanced CE remote controls Sports and fitness Toys Medical Beacons 4446_194 v1.0 ii Contents Key features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii 1 Revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 About this document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 Document status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Register tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2.1 Fields and values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2.2 Permissions . . . . . ...