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Semtech Corporation
Semtech Corporation
Semtech Corporation
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Low Power Integrated UHF Transceiver with On-Chip +20dBm PA

Semtech Corporation

The SX1231H is a highly integrated RF transceiver capable of operation over a wide frequency range, including the 433, 868 and 915 MHz license-free ISM (Industry Scientific and Medical) frequency bands. Its highly integrated architecture allows for a minimum of external components while maintaining maximum design flexibility. All major RF communication parameters are programmable and most of them can be dynamically set. The SX1231H offers the unique advantage of programmable narrow-band and wideband communication modes without the need to modify external components. The SX1231H is optimized for low power consumption while offering high RF output power and channelized operation. TrueRF™ technology enables a low cost external component count (elimination of the SAW filter) while still satisfying ETSI and FCC regulations.

  • +20 dBm - 100 mW Power Output Capability
  • High Sensitivity: down to -120 dBm at 1.2 kbps
  • High Selectivity: 16-tap FIR Channel Filter
  • Bullet-proof front end: IIP3 = -18 dBm, IIP2 = +35 dBm, 80 dB Blocking Immunity, no Image Frequency response
  • Low current: Rx = 16 mA, 100nA register retention
  • Programmable Pout: -18 to +20 dBm in 1dB steps
  • Constant RF performance over voltage range of chip
  • FSK Bit rates up to 300 kb/s
  • Fully integrated synthesizer with a resolution of 61 Hz
  • FSK, GFSK, MSK, GMSK and OOK modulations
  • Built-in Bit Synchronizer performing Clock Recovery
  • Incoming Sync Word Recognition
  • 115 dB+ Dynamic Range RSSI
  • Automatic RF Sense with ultra-fast AFC
  • Packet engine with CRC-16, AES-128, 66-byte FIFO
  • Built-in temperature sensor
  • Automated Meter Reading
  • Wireless Sensor Networks
  • Home and Building Automation
  • Wireless Alarm and Security Systems
  • Industrial Monitoring and Control
  • Wireless M-BUS
  • Current - Receiving:16mA
  • Current - Transmitting:16mA ~ 130mA
  • Data Rate (Max):300kbps
  • Frequency:290MHz ~ 340MHz, 424MHz ~ 510MHz, 862MHz ~ 1.02GHz
  • GPIO:6
  • Modulation:FSK, GFSK, GMSK, MSK, OOK
  • Mounting Type:Surface Mount
  • Operating Temperature:-40°C ~ 85°C
  • Package / Case:24-VQFN Exposed Pad
  • Packaging:Tape & Reel (TR)
  • Power - Output:20dBm
  • RF Family/Standard:General ISM < 1GHz
  • Sensitivity:-120dBm
  • Serial Interfaces:SPI
  • Supplier Device Package:24-QFN (5x5)
  • Type:TxRx Only
  • Voltage - Supply:2.4V ~ 3.6V