nRF905 是挪威 Nordic VLSI 公司推出的单片射频收发器，工作电压为 1.9 ～3.6V， 32 引脚 QFN 封装 (5×5mm)，工作于 433/868/915MHz 三个 ISM(工业、科学和医学)频道，频道之间的转换时间小于 650us。

nRF905 由频率合成器、接收解调器、功率放大器、晶体振荡器和调制器组成，不需外加声表滤波器， ShockBurstTM 工作模式，自动处理字头和 CRC(循环冗余码校验)，使用 SPI 接口与微控制器通信，配置非 常方便。此外，其功耗非常低，以- 10dBm 的输出功率发射时电流只有 11mA，工作于接收模式时的电流 为 12.5mA，内建空闲模式与关机模式，易于实现节能。

nRF905 适用于无线数据通信、无线报警及安全 系统、无线开锁、无线监测、家庭自动化和玩具等诸多领域。-nRF905 Norway Nordic VLSI has introduced single-chip RF transceiver, the working voltage of 1.9 ~ 3.6V, 32-pin QFN package (5 × 5mm), working in 433/868/915MHz three ISM (industrial, scientific and medical) conversion time channel, the channel is less than 650us.

nRF905 by the frequency synthesizer, the receiver demodulator, a power amplifier, a crystal oscillator and a modulator, no external SAW filter, ShockBurstTM mode, automatic processing of header and CRC (cyclic redundancy check), using SPI interface to communicate with a microcontroller, configuration is very convenient. In addition, the power consumption is very low, in order to- 10dBm output power current emission current is only 11mA, working at the reception mode is 12.5mA, built-in idle mode and off mode, easy to implement energy saving.

nRF905 suitable for wireless data communications, wireless alarm and security systems, wireless lock, wireless monitoring, home automation and toys, and many other fields.