描述 Description

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.

特性 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

簡介

STS1TX屬于RF/IF射頻/中頻RFID的射頻發(fā)射器。由制造生產(chǎn)的STS1TX射頻發(fā)射器RF 發(fā)射器用于發(fā)送射頻信號并調(diào)制該信號以承載系統(tǒng)中的數(shù)據(jù)。頻率范圍為 315 Hz 至 64 GHz，數(shù)據(jù)速率為 3 kbps 至 2 Mbps，功率輸出為 -30 dBm 至 24.7 dBm。數(shù)據(jù)接口有連接器、I2C、引腳焊盤、并行、PCB、串行、焊盤、SPI、UART 和 USB，天線連接方式有堡形、板載、PCB 和通孔。