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Manufacturer Part #


SPIRIT1 Series 3.6V 500kbps Low Data Rate Low Power Sub-1GHz Transceiver QFN-20

ECAD Model:
Mfr. Name: STMicroelectronics
Standard Pkg:
Date Code: 2323
Product Specification Section
STMicroelectronics SPIRIT1QTR - Technical Attributes
Attributes Table
Frequency Range: 150MHz to 956MHz
Data Rate: 1kbps to 500kbps
Output Power: 16dBm
Supply Voltage: 1.8V to 3.6V
Sensitivity: -118dBm
Package Style:  QFN-20
Mounting Method: Surface Mount
Features & Applications

The SPIRIT1QTR is a very low-power RF transceiver, intended for RF wireless applications in the sub-1 GHz band.

It is designed to operate both in the license-free ISM and SRD frequency bands at 169, 315, 433, 868, and 915 MHz, but can also be programmed to operate at other additional frequencies in the 300-348 MHz, 387-470 MHz, and 779-956 MHz bands.

The air data rate is programmable from 1 to 500 kbps, and the SPIRIT1 can be used in systems with channel spacing of 12.5/25 kHz.


  • Frequency bands:
    • 150-174 MHz,300-348MHz,387-470 MHz,779-956 MHz
  • Modulation schemes:
    • 2-FSK, GFSK, MSK, GMSK, OOK, and ASK
  • Air data rate from 1 to 500 kbps
  • Very low power consumption
  • Programmable RX digital filter from 1 kHz to 800 kHz
  • Excellent performance of receiver sensitivity (-118 dBm
  • Programmable output power up to +11 dBm
  • Fast startup and frequency synthesizer settling time (6 μs)
  • Frequency offset compensation
  • Integrated temperature sensor
  • Battery indicator and low battery detector
  • RX and TX FIFO buffer (96 bytes each)
  • Configurability via SPI interface
  • Automatic acknowledgement, retransmission,and timeout protocol engine
  • AES 128-bit encryption co-processor
  • Antenna diversity algorithm
  • Fully integrated ultra low power RC oscillator
  • Wake-up on internal timer and wake-up on external event
  • Flexible packet length with dynamic payload length
  • Sync word detection
  • Address check
  • Automatic CRC handling
  • FEC with interleaving Digital RSSI output
  • Programmable carrier sense (CS) indicator
  • Automatic clear channel assessment (CCA)
  • Programmable preamble quality indicator(PQI)
  • Link quality indication (LQI)
  • Whitening and de-whitening of data
  • QFN20 4x4 mm RoHS package
  • Operating temperature range from -40 °C to 85 °C


  • AMR (automatic meter reading)
  • Home and building automation
  • WSN (wireless sensors network)
  • Industrial monitoring and control
  • Wireless fire and security alarm systems
  • Point-to-point wireless link

View the available SPIRIT1 series of sub-GHZ transceiver

Pricing Section
Global Stock:
Germany (Online Only):
Factory Stock:Factory Stock:
Factory Lead Time:
12 Weeks
Minimum Order:
Multiple Of:
Web Price