Overview
The SPIRIT1QTR, produced by STMicroelectronics, is a very low-power RF transceiver designed for RF wireless applications in the sub-1 GHz band. It operates in the license-free ISM and SRD frequency bands at 169, 315, 433, 868, and 915 MHz, and can also be programmed to operate at other frequencies within the 150-174 MHz, 300-348 MHz, 387-470 MHz, and 779-956 MHz bands. The transceiver is notable for its low power consumption, with 9 mA in receive mode and 21 mA in transmit mode at +11 dBm, making it suitable for battery-powered devices. It integrates a configurable baseband modem and supports various modulation schemes including 2-FSK, GFSK, MSK, GMSK, OOK, and ASK.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency Bands | 150-174 MHz, 300-348 MHz, 387-470 MHz, 779-956 MHz |
| Modulation Schemes | 2-FSK, GFSK, MSK, GMSK, OOK, ASK |
| Air Data Rate | 1 to 500 kbps |
| Power Consumption | 9 mA (RX), 21 mA (TX at +11 dBm) |
| Programmable RX Digital Filter | 1 kHz to 800 kHz |
| Channel Spacing | Minimum 12.5 kHz |
| Receiver Sensitivity | -118 dBm |
| Programmable Output Power | Up to +16 dBm |
| Startup and Frequency Synthesizer Settling Time | 6 μs |
| Operating Voltage | 1.8 to 3.6 VDC |
| Operating Temperature Range | -40 °C to 105 °C |
| Package | VFQFPN 20 4x4x1.0 mm |
| RoHS Compliance | Ecopack3 |
Key Features
- Integrated temperature sensor and battery indicator with low battery detector
- RX and TX FIFO buffers (96 bytes each)
- Configurability via SPI interface
- Automatic acknowledgment, retransmission, and timeout protocol engine
- AES 128-bit encryption co-processor for secure data transfer
- Antenna diversity algorithm with integrated antenna switching control
- Fully integrated ultra-low power RC oscillator
- Wake-up on internal timer and wake-up on external event
- Flexible packet length with dynamic payload length
- Sync word detection, address check, and automatic CRC handling
- FEC with interleaving and digital RSSI output
- Programmable carrier sense (CS) indicator and automatic clear channel assessment (CCA) before transmitting
- Embedded CSMA/CA protocol
- Programmable preamble quality indicator (PQI) and data whitening/de-whitening
- Compliance with Wireless M-BUS, EN 300 220, FCC CFR47 15, and ARIB STD T-67, T93, T-108 standards
Applications
- Automatic Meter Reading (AMR)
- Home and Building Automation
- Wireless Sensor Networks (WSN)
- Industrial Monitoring and Control
- Wireless Fire and Security Alarm Systems
- Point-to-point Wireless Links
Q & A
- What are the operating frequency bands of the SPIRIT1QTR?
The SPIRIT1QTR operates in the frequency bands of 150-174 MHz, 300-348 MHz, 387-470 MHz, and 779-956 MHz, including the license-free ISM and SRD bands at 169, 315, 433, 868, and 915 MHz.
- What modulation schemes does the SPIRIT1QTR support?
The SPIRIT1QTR supports modulation schemes including 2-FSK, GFSK, MSK, GMSK, OOK, and ASK.
- What is the air data rate range of the SPIRIT1QTR?
The air data rate of the SPIRIT1QTR is programmable from 1 to 500 kbps.
- What is the power consumption of the SPIRIT1QTR?
The SPIRIT1QTR consumes 9 mA in receive mode and 21 mA in transmit mode at +11 dBm.
- Does the SPIRIT1QTR support encryption?
Yes, the SPIRIT1QTR includes an AES 128-bit encryption co-processor for secure data transfer).
- What is the operating temperature range of the SPIRIT1QTR?
The operating temperature range of the SPIRIT1QTR is from -40 °C to 105 °C).
- What package type does the SPIRIT1QTR come in?
The SPIRIT1QTR comes in a VFQFPN 20 4x4x1.0 mm package).
- Is the SPIRIT1QTR RoHS compliant?
Yes, the SPIRIT1QTR is RoHS compliant with an Ecopack3 rating).
- What are some of the key applications of the SPIRIT1QTR?
The SPIRIT1QTR is used in applications such as AMR, home and building automation, WSN, industrial monitoring and control, wireless fire and security alarm systems, and point-to-point wireless links).
- Does the SPIRIT1QTR support antenna diversity?
Yes, the SPIRIT1QTR supports antenna diversity with an integrated antenna switching control algorithm).
