433/868/915MHz Ultra Low Power RF Transceiver Module with Internal Antenna

  • ◆ FSK and GFSK modulation.
  • ◆ Ultra Low RX Current Consumption : 4.5mA.
  • ◆ High RX sensitivity, -117dBm at 2Kbps on-air data rate.
  • ◆ Programmable data rate from 2Kbps to 150Kbps.
  • ◆ Programmable TX power level from – 40dBm to 12dBm.
  • ◆ Support 3-wire or 4-wire SPI.
  • ◆ Designed with internal antenna.
  • ◆ Metal cover against EMI interference


The REYAX RYFAxxx is based on Amiccom A7129 chip. It is a monolithic low-IF architecture CMOS FSK/GFSK TRX for wireless applications in the ISM bands. This device is especially suitable for battery-powered application.


Item Min. Typical Max. Unit Condition
Supply Voltage 1.9 3.3 3.6 V VDD
Current Consumption   0.3   uA Deep Sleep Mode

(no register retention)

434MHz TX12.8dBm   36   mA  
 868MHz TX12.5dBm   36   mA  
915MHz TX11dBm   36   mA  
RX   4.5   mA  
Maximum Output Power     13 dBm  
RF Frequency Accuracy   10   ppm  
RX Sensitivity   -117   dBm @BER=0.1% high gain mode 2kbps (IFBW=50KHz)
RF Sensitivity -118     dBm  
Data rate 2   150 Kbps  
High Level Input Voltage 0.8VDD   VDD V VIH
Low Level Input Voltage 0   0.2VDD V VIL
High Level Output Voltage VDD-0.4   VDD V VOH
Low Level Output Voltage 0   0.4 V VOL
Operating Temperature -40 25 +85 ˚C  
Weight   6   g  


File Name Type Updated Preview Download
RYFAxxx PDF 2023-01-09 Preview download


File Name Type Updated Preview Download
A7129 ZIP 2022-07-21 Preview download