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Home » NEWEST Products » New by Manufacturer » STMicroelectronics » STS1TX Low-Power RF Transmitter - STM
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STMicroelectronics STS1TX Low-Power RF Transmitter

STMicroelectronics STS1TX Low-Power RF Transmitter

STMicroelectronics STS1TX Low-Power RF Transmitter is 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 915MHz, but can also be programmed to operate at other frequencies in the 300-348, 387-470, and 779-956MHz bands. The air data rate is programmable from 1 to 500kbps, and the STS1TX can be used in systems with channel spacing of 12.5/25kHz, complying with the EN 300 220 standard. It uses very few discrete external components and integrates a configurable baseband modem, which supports data management and modulation. The data management handles the data in the proprietary fully-programmable packet format, and also allows the M-Bus standard compliance format (all performance classes). An AES 128-bit encryption co-processor is available for secure data transfer. The STS1TX supports different modulation schemes: 2-FSK, GFSK, OOK, ASK, and MSK. Transmitted data bytes are buffered in FIFO (TX FIFO), accessible via the SPI interface for host processing.

Features
  • Frequency bands: 150-174MHz, 300-348MHz, 387-470MHz, 779-956MHz
  • Modulation schemes: 2-FSK, GFSK, MSK, GMSK, OOK, and ASK
  • Air data rate from 1 to 500kbps
  • Very low power consumption (21mA TX at +11dBm)
  • Programmable channel spacing (12.5kHz min.)
  • Programmable output power up to +16dBm
  • Fast startup and frequency synthesizer settling time (6μs)
  • Integrated temperature sensor
  • Battery indicator and low battery detector
  • TX FIFO buffer (96 bytes each)
  • Configurability via SPI interface
  • AES 128-bit encryption co-processor
  • Fully integrated ultra low power RC oscillator
  • Wakeup on internal timer and on external event
  • Flexible packet length with dynamic payload length
  • Automatic CRC handling

  • FEC with interleaving
  • Whitening of data
  • Wireless M-BUS, EN 300 220, FCC CFR47 15 (15.205, 15.209, 15.231, 15.247, 15.249), and ARIB STD T-67, T93, T-108 compliant
  • QFN20 4x4mm RoHS package
  • Operating temperature range from -40°C to 85°C

Applications
  • 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
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  • STMicroelectronics