S2-LPTX Datasheet Sub-1 GHz proprietary radio transmitter Features Frequency bands: 413-479 MHz 826-958 MHz Modulation schemes: 2(G)FSK, 4(G)FSK OOK, ASK Air data rate from 0.1 to 500 kbps Ultra-low power consumption: 10 mA TX +10 dBm Programmable RF output power up to +16 dBm Programmable channel spacing Fast start-up and frequency synthesizer settling time Battery indicator and low battery detector TX 128 bytes FIFO buffers 4-wire SPI interface ST companion integrated filter chips are available Fully integrated ultra-low power RC oscillator Wake-up driven by internal timer or external event Flexible packet length with dynamic payload length IEEE 802.15.4g hardware packet support with whitening, FEC, CRC Maturity status link Wireless M-BUS supported S2-LPTX Enables operations in the SIGFOX network 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 +105 C Applications Sensors to Cloud Smart metering Home energy management systems Wireless alarm systems Smart home Building automation Industrial monitoring and control Smart lighting systems DS13100 - Rev 1 - September 2019 www.st.com For further information contact your local STMicroelectronics sales office.S2-LPTX Description The S2-LPTX is a high performance ultra-low power RF transmitter, intended for RF wireless applications in the sub-1 GHz band. It is designed to operate in both the license-free ISM and SRD frequency bands at 433, 868 and 920 MHz, but can also be programmed to operate at other additional frequencies in the 413-479 MHz, 826-958 MHz. The S2-LPTX supports different modulation schemes: 2(G)FSK, 4(G)FSK, OOK and ASK. The air data rate is programmable from 0.1 to 500 kbps. The S2-LPTX meets the regulatory requirements applicable in territories worldwide, including Europe, Japan, China and the USA. DS13100 - Rev 1 page 2/64