STS1TXQTR

RF Transmitter Overview

The STS1TXQTR is a low-power RF transmitter from STMicroelectronics designed for sub-1 GHz wireless applications. It operates within frequency bands of 150-174 MHz, 300-348 MHz, 387-470 MHz, and 779-956 MHz. The device supports modulation formats including ASK, OOK, FSK, GFSK, MSK, and GMSK. It features a maximum output power of 16 dBm and a data rate up to 500 kbps. The supply voltage range is 1.8 V to 3.6 V, with a typical transmitting current of 54 mA. The component is housed in a QFN-20 package and is rated for operation at temperatures down to -40°C.

RF Transmitter Feature Summary

• Supports multiple sub-1 GHz frequency bands for global regulatory compliance
• Enables flexible modulation schemes including OOK, ASK, and various FSK variants
• Delivers high output power of 16 dBm for extended range communication
• Integrated design reduces external component count for simplified PCB layout

RF Transmitter Applications

• RF wireless telemetry systems
• Remote control and keyless entry devices
• Industrial sensor networks
• Smart metering infrastructure

RF Transmitter Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with your design requirements. Confirm the lifecycle status, as this part may be marked obsolete or have limited availability. Cross-reference the pinout and thermal pad specifications with your PCB footprint library. Ensure that the selected modulation and frequency band settings align with regional radio regulations for your target market. Consult the manufacturer's support channels for any updated engineering samples or alternative recommendations if stock is constrained.

RF Transmitter Selection Notes

Select this component when a single-chip solution for sub-1 GHz transmission is required with minimal external passive components. Consider the 16 dBm output power capability if long-range communication is necessary without additional amplification. Evaluate the supported modulation types against your protocol stack requirements, particularly for OOK or FSK implementations. Check the operating temperature range to ensure suitability for industrial or outdoor environments. Verify the QFN-20 package dimensions against your assembly capabilities and thermal management strategy.

RF Transmitter Part Context

The STS1TX series represents STMicroelectronics' portfolio of highly integrated RF transmitters targeting cost-sensitive and space-constrained wireless applications. These devices are engineered to simplify the design of IoT nodes and remote control systems by combining the RF front-end and baseband functions into a single IC. The QFN-20 packaging facilitates surface-mount assembly and efficient heat dissipation. This family is positioned for applications requiring reliable short-to-medium range communication in unlicensed ISM bands.

RF Transmitter Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the lifecycle status is listed as Obsolete, direct replacements should be identified through official STMicroelectronics obsolescence notices or authorized distributor cross-reference tools. Engineers should verify pin-to-pin compatibility and electrical parameter equivalence before considering any alternative components.