RF Transmitters
  • SX1230
  • +17dBm RF Transmitter, 315/433/868/915MHz
  • SX1243
  • Low cost, low current +10dBm RF Transmitter, 310-928MHz
  • SX1710
  • Broadband High Efficiency RF Power Amplifier
Semtech SX1223

Semtech SX1223

Single-Chip Multi-Channel Low-Power UHF RF Transmitter

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The SX1223 is a single chip transmitter operating in UHF frequency bands including the 434, 869 and 915 MHz license-free ISM (Industry Scientific and Medical) bands. Its highly integrated architecture allows for minimum external components while maintaining design flexibility.


  • RF output power: up to +10 dBm
  • Low power consumption:
    TX = 25.8 mA @ 10 dBm (typical)
  • Supply voltage down to 2.0 V
  • Data rate from 1.2 to 153.6 kbit/s
  • On-chip frequency synthesizer
  • Continuous phase 2-level FSK modulation
  • Very small RoHS green package (TQFN24, 4mm x 4mm)


  • Automated Meter Reading (AMR)
  • Home Automation and Access Control
  • High-Quality Speech, Music and Data over RF



Order Codes

  • SX1223I073TRT: TQFN-24, Lead Free RoHS Compliant, 3,000 pcs on Tape & Reel
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