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Semtech SX1212

Ultra-Low Power Integrated 300-510MHz Transceiver


TopologyOther Topology
IC revision2


The SX1212 is a low cost single-chip transceiver operating in the frequency ranges from 300MHz to 510MHz. The SX1212 is optimized for very low powerconsumption (3mA in receiver mode).

It incorporates a baseband modem with data rates up to 150 kb/s. Datahandling features include a sixty-four byte FIFO, packet handling, automatic CRC generation and data whitening. Its highly integrated architecture allows for minimum external component count whilst maintaining design flexibility. All major RF communication parameters are programmable and most of them may be dynamically set. It complies with European (ETSIEN 300-220 V2.1.1) and North American (FCC part 15.247 and 15.249) regulatory standards.


  • Low Rx power consumption: 3mA
  • 􀂃 Low Tx power consumption: 25 mA @ +10 dBm
  • 􀂃 Good reception sensitivity: down to -104 dBm at
  • 25 kb/s in FSK, -110 dBm at 2kb/s in OOK
  • 􀂃 Programmable RF output power: up to +12.5 dBm
  • in 8 steps
  • 􀂃 Packet handling feature with data whitening and
  • automatic CRC generation
  • 􀂃 RSSI (Received Signal Strength Indicator)
  • 􀂃 Bit rates up to 150 kb/s, NRZ coding
  • 􀂃 On-chip frequency synthesizer
  • 􀂃 FSK and OOK modulation
  • 􀂃 Incoming sync word recognition
  • 􀂃 Built-in Bit-Synchronizer for incoming data and
  • clock synchronization and recovery
  • 􀂃 5 x 5 mm TQFN package
  • 􀂃 Optimized Circuit Configuration for Low-cost
  • applications

Typical applications

  • Industrial monitoring and control
  • Wireless alarm and security systems
  • Remote Wireless Control
  • Wireless sensor networks
  • Automated Meter Reading
  • Home and building automation