Circuit Description
   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