S2-LPQTR RF Transceiver

STMicroelectronics' S2-LPQTR ultra-low power, high-performance, sub-1 GHz RF transceiver designed for extending battery lifetime

Image of STMicroelectronics' S2-LPQTR RF TransceiverSTMicroelectronics' S2-LP transceiver is designed for superior RF performance and unparalleled energy efficiency, extending battery life from months to more than 10 years. The embedded radio guarantees an RF link budget in excess of 140 dB besides a compelling output power up to +16 dBm, resulting in a robust and reliable communication link. The S2-LP is ready for SIGFOX™, Wireless M-Bus, 6LowPAN, and IEEE 802.15.4g networking connectivity, simplifying the design of IoT applications and enabling remote sensors to directly connect to the cloud without the need for a local gateway.

The kit comes in three variants (STEVAL-FKI868V1, STEVAL-FKI915V1, STEVAL-FKI433V1) to cover various frequency bands.

  • Frequency bands:
    • 430 MHz to 470 MHz
    • 860 MHz to 940 MHz
  • Modulation schemes:
    • 2(G)FSK, 4(G)FSK
    • OOK, ASK
  • Air data rate from 0.3 kbps to 500 kbps
  • Ultra-low power consumption:
    • 7 mA RX
    • 10 mA TX at +10 dBm
  • Excellent performance of receiver sensitivity: down to -130 dBm
  • Excellent receiver selectivity and blocking
  • Programmable RF output power up to +16 dBm
  • Bit rate from 0.3 kbps to 500 kbps
  • Programmable RX digital filter
  • Programmable channel spacing
  • Fast startup and frequency synthesizer settling time
  • Automatic frequency offset compensation, AGC, and symbol timing recovery
  • More than 140 dB RF link budget
  • Battery indicator and low battery detector
  • RX and TX FIFO buffers
  • 4-wire SPI
  • Automatic packet acknowledgment and retransmission
  • Embedded timeout protocol engine
  • Antenna diversity algorithm
  • Fully integrated ultra-low power RC oscillator
  • Wake-up driven by internal timer or external event
  • Digital real time RSSI
  • Flexible packet length with dynamic payload length
  • Programmable preamble and SYNC word quality filtering and detection
  • Embedded CSMA/CA engine based on listen-before-talk systems
  • IEEE 802.15.4g hardware packet support with whitening, FEC, CRC and dual SYNC word detection
  • Wireless M-BUS supported
  • Enables operations in the SIGFOX networks
  • Suitable to build systems targeting:
    • Europe: ETSI EN 300 220, ETSI EN 303 131
    • US: FCC part 15 and part 90
    • Japan: ARIB STD T67, T108
    • China: SRRC
  • Operating temperature range:
    • -40°C to +85°C
  • Sensors to Cloud
  • Smart metering
  • Home energy management systems
  • Wireless alarm systems
  • Smart home
  • Building automation
  • Industrial monitoring and controls
  • Smart lighting systems

S2-LPQTR RF Transceiver

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Published: 2017-12-07