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About nRF2401A™


The nRF2401A is a high sensitivity (-93 dBm), true GFSK single chip transceiver with a maximum date rate of 1 Mbit/s. It consists of a fully integrated frequency synthesizer, a power amplifier, a crystal oscillator and a modulator. Output power and frequency channels are easily programmable by use of a 3-wire serial interface. Current consumption is very low, only 10.5 mA at an output power (TX) of -5 dBm and 18 mA in receive (RX) mode. Built-in Power Down modes make significant power savings easily realizable.

The nRF2401A requires only two external components and no external SAW filter – so is well suited to compact applications. It is designed specifically to block interference in crowded 2.4 GHz environments and utilizes a unique ShockBurst™ feature in both receive and transmit modes to greatly simply protocol and software design, minimize power consumption and relax MCU requirements.

The nRF2401A comes in a small 24-pin QFN24 5 x 5 mm package, offers a 0 to 1 Mbit/s data rate, offers multi-channel operation and supports frequency hopping across up to 125 channels with a channel switching time of less than 200 µs, includes data slicing and clock recovery of data plus address and CRC computations.
It also features DuoCeiver™ technology for simultaneous dual receiver topologies and a ShockBurst™ mode for ultra low-power operation and relaxed MCU performance. Power supply range is 1.9 to 3.6 V, supply current is just 10.5 mA peak (TX) at -5 dBm output power and 18 mA peak (RX) in receive mode. Operating temperature range is -40 to +85 ºC.

Prime applications include wireless mouse, keyboards and joysticks, keyless entry, wireless data communication, alarm and security systems, home automation, surveillance, automotive, telemetry, intelligent sports equipment (e.g. wrist watches and associated sensors), industrial sensors and toys.