The Swiss AXSEM  announced its single-chip narrow-band RF transceiver AX5043 a for the bands in the frequency range 70 MHz to 1050 MHz with a receiver bandwidth of 1 kHz to 100 kHz. The AX5043 offers very long range with a small number of components. The sensitvity of -126 dBm at 868 MHz and 1.2 kbps FSK is one of the highest sensitivities in the market with only 10.5 mA current consumption. Together with the excellent power amplifier performance of 17 dBm at 55 mA current consumption, the AX5043 has the sensational link budget of 143 dB. In Wake-On-Radio mode current consumption is typical below 5?A.
The AX5043 transceiver consists of an integrated RF front-end with modulator and demodulator and flexible communication controller. Baseband data processing is implemented in the integrated communication controller for user-friendly communication and configuration via SPI interface. The 256 byte packet buffer in conjunction with the 500 nA wake-up timer allow the AX5043 to work well together with low cost micro-controllers. The integrated HDLC protocol guarantees exceptionally compact code and small CPU overhead. The digital RSSI provides quick results for low-power operation.