nRF2401 is a single-chip radio transceiver for the world wide 2.4 - 2.5 GHz ISMband. The transceiver consists of a fully integrated frequency synthesizer, a poweramplifier, a crystal oscillator and a modulator. Output power and frequency channelsare easily programmable by use of the 3-wire serial interface. Current consumption isvery low, only 10.5mA at an output power of -5dBm and 18mA in receive mode.Built-in Power Down modes makes power saving easily realizable.