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Semtech Corporation
SX1212
Semtech Corporation
SX1231
 
Semtech Corporation
SX1231H
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SX1231

Low Power Integrated UHF Transceiver

Semtech Corporation

The SX1231 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 whilst maintaining maximum design flexibility. All major RF communication parameters are programmable and most of them can be dynamically set.

Datasheets:
Product Description

The SX1231 offers the unique advantage of programmable narrow-band and wide-band communication modes without the need to modify external components. The SX1231 is optimized for low power consumption while offering high RF output power and channelized operation. TrueRF™ technology enables a lowcost external component count (elimination of the SAW filter) whilst still satisfying ETSI and FCC regulations.

Features
  • 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 +17 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, AES-128 encryption and 66-byte FIFO
  • Built-in temperature sensor and Low Battery indicator
Applications
  • Automated Meter Reading
  • Wireless Sensor Networks
  • Home and Building Automation
  • Wireless Alarm and Security Systems
  • Industrial Monitoring and Control
Specifications
  • Current - Receiving:16mA
  • Current - Transmitting:16mA ~ 95mA
  • 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:17dBm
  • RF Family/Standard:General ISM < 1GHz
  • Sensitivity:-120dBm
  • Serial Interfaces:SPI
  • Supplier Device Package:24-QFN (5x5)
  • Type:TxRx Only
  • Voltage - Supply:1.8V ~ 3.6V
Parts
Associated Product
Semtech Corporation SX1231SKB915
Category: RF, Wireless-RF, IF-Evaluation, Development Kits, Boards