Low data rate, low power sub-1GHz transmitter

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  • The STS1TX is a very low-power RF transmitter 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 frequencies in the 300-348, 387-470, and 779-956 MHz bands. The air data rate is programmable from 1 to 500 kbps, and the STS1TX can be used in systems with channel spacing of 12.5/25 kHz, 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.

    Key Features

    • Frequency bands: 150-174 MHz, 300-348 MHz, 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 (21 mA TX at +11 dBm)
    • Programmable channel spacing (12.5 kHz min.)
    • Programmable output power up to +16 dBm
    • Fast startup and frequency synthesizer settling time (6 μs)
    • 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 4x4 mm RoHS package
    • Operating temperature range from -40 °C to 85 °C

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Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
More info
Order from Distributors
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min
max
STS1TXQTR VFQFPN 20 4x4x1.0 Tape And Reel -40 85
Active
- - 5A992C
MORE INFO

Country of Origin:

PHILIPPINES

Check Availability

Distributor availability ofSTS1TXQTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4330 1 Order Now
ARROW EUROPE 49500 0 Order Now
MOUSER WORLDWIDE 641 1 Order Now
Farnell Element14 EUROPE 4500 1 Order Now

Distributor reported inventory date: 2019-08-21

Distributor Name

DIGIKEY

Stock

4330

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

49500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

641

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4500

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-08-21

Get sample

STS1TXQTR

Package

VFQFPN 20 4x4x1.0

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofSTS1TXQTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4330 1 Order Now
ARROW EUROPE 49500 0 Order Now
MOUSER WORLDWIDE 641 1 Order Now
Farnell Element14 EUROPE 4500 1 Order Now

Distributor reported inventory date: 2019-08-21

Distributor Name

DIGIKEY

Stock

4330

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

49500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

641

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4500

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-08-21

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

5A992C

Country of Origin

PHILIPPINES

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS9878
      Low data-rate, low power sub 1 GHz transmitter
      1.0
      2.04 MB
      PDF
      DS9878

      Low data-rate, low power sub 1 GHz transmitter

    • Description Version Size Action
      UM2211
      BLE-Sub1 GHz development kit
      2.0
      13.61 MB
      PDF
      UM2211

      BLE-Sub1 GHz development kit

    • Description Version Size Action
      DT0130
      SubGHz Module integration design guidelines
      1.0
      413.73 KB
      PDF
      DT0130

      SubGHz Module integration design guidelines

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STS1TXQTR
Active
VFQFPN 20 4x4x1.0 Industrial Ecopack3

STS1TXQTR

Package:

VFQFPN 20 4x4x1.0

Material Declaration**:

Marketing Status

Active

Package

VFQFPN 20 4x4x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.