OVERVIEW
   The AX5042 is a true single chip low−power CMOS transceiver primarily for use in SRD bands. The on−chip transceiver consists of a fully integrated RF front−end with modulator and demodulator. Base band data processing is implemented in an advanced and flexible communication controller that enables user friendly communication via the SPI interface or in direct wire mode.

APPLICATIONs
      400−470 MHz and 800−940 MHz data transmission and
   reception in the Short Range Device (SRD) band. The
   frequency range up to 510 MHz and 1020 MHz is accessible
   with higher VDD limit.
   • Automatic Meter Reading
   • FCC Part 90.210 6.25 kHz, 12.5 kHz and 25 kHz
      Applications
   • EN 300 220 V 2.1.1
   • European Paging Applications
   • Long Range Sensor Read−out
   • Long Range Remote Controls