Overview
The S2-LPQTR is a high-performance, ultra-low power RF transceiver designed by STMicroelectronics. It is intended for RF wireless applications in the sub-1 GHz band, operating in both the license-free ISM and SRD frequency bands. The device supports multiple frequency bands including 413-479 MHz, 452-527 MHz, 826-958 MHz, and 904-1055 MHz, making it versatile for various global regulatory requirements such as those in Europe, the USA, Japan, and China.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Frequency Bands | 413-479 MHz, 452-527 MHz, 826-958 MHz, 904-1055 MHz | |
| Modulation Schemes | 2(G)FSK, 4(G)FSK, OOK, ASK | |
| Air Data Rate | 0.1 to 500 kbps | |
| Power Consumption (RX) | 7 mA | mA |
| Power Consumption (TX @ +10 dBm) | 10 mA | mA |
| Receiver Sensitivity | Down to -130 dBm | dBm |
| RF Output Power | Up to +16 dBm | dBm |
| Operating Temperature Range | -40 °C to +105 °C | °C |
| Package Type | QFN-24-EP (4x4) |
Key Features
- Ultra-low power consumption with 7 mA RX and 10 mA TX @ +10 dBm.
- Excellent receiver sensitivity down to -130 dBm and high receiver selectivity and blocking.
- Programmable RF output power up to +16 dBm and programmable RX digital filter.
- Fast start-up and frequency synthesizer settling time, along with automatic frequency offset compensation, AGC, and symbol timing recovery.
- More than 145 dB RF link budget and battery indicator with low battery detector.
- RX and TX 128 bytes FIFO buffers and 4-wire SPI interface.
- Support for frequency hopping, TX/RX and antenna diversity switch control.
- Embedded timeout protocol engine, CSMA/CA engine, and IEEE 802.15.4g hardware packet support.
- Integrated ultra-low power RC oscillator and wake-up driven by internal timer or external event.
Applications
- Sensors to Cloud and smart metering systems.
- Home energy management systems and wireless alarm systems.
- Smart home and building automation.
- Industrial monitoring and control, and smart lighting systems.
- Supports operations in SIGFOX™ and MONARCH networks.
- Compliant with various regional regulations including ETSI, FCC, ARIB, and SRRC.
Q & A
- What are the supported frequency bands of the S2-LPQTR?
The S2-LPQTR supports frequency bands of 413-479 MHz, 452-527 MHz, 826-958 MHz, and 904-1055 MHz.
- What modulation schemes does the S2-LPQTR support?
The S2-LPQTR supports 2(G)FSK, 4(G)FSK, OOK, and ASK modulation schemes.
- What is the range of the air data rate for the S2-LPQTR?
The air data rate is programmable from 0.1 to 500 kbps.
- What is the power consumption of the S2-LPQTR in RX and TX modes?
The power consumption is 7 mA in RX mode and 10 mA in TX mode @ +10 dBm.
- What is the receiver sensitivity of the S2-LPQTR?
The receiver sensitivity is down to -130 dBm.
- What is the maximum RF output power of the S2-LPQTR?
The maximum RF output power is up to +16 dBm.
- What are the operating temperature ranges for the S2-LPQTR?
The operating temperature range is -40 °C to +105 °C.
- Does the S2-LPQTR support frequency hopping and antenna diversity?
Yes, the S2-LPQTR supports frequency hopping and antenna diversity switch control.
- What interfaces does the S2-LPQTR support?
The S2-LPQTR supports a 4-wire SPI interface, UART, and other interfaces like antenna diversity and a separate analog interface.
- Is the S2-LPQTR compliant with various regional regulations?
Yes, it is compliant with regulations such as ETSI, FCC, ARIB, and SRRC.
- What are some typical applications of the S2-LPQTR?
Typical applications include sensors to cloud, smart metering, home energy management, wireless alarm systems, smart home, building automation, and industrial monitoring and control.
