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.

sts1tx是一個(gè)非常低功耗射頻發(fā)射機(jī)用于1 GHz頻段的RF無(wú)線應(yīng)用。它被設(shè)計(jì)為工作在無(wú)需許可的ISM和SRD頻帶在169，315，433，868，和915兆赫，但也可以被編程為在其他頻率的300-348，387-470操作，和779-956兆赫波段?？諝鈹?shù)據(jù)率可從1到500 kbps，而sts1tx可用于與12.5/25千赫信道間隔的系統(tǒng)，符合EN 300標(biāo)準(zhǔn)220。它使用非常少的外部元件和集成了一個(gè)可配置的基帶調(diào)制解調(diào)器，它支持?jǐn)?shù)據(jù)管理和調(diào)制。數(shù)據(jù)管理處理私有數(shù)據(jù)的完全可編程的數(shù)據(jù)包格式，并允許M-Bus標(biāo)準(zhǔn)格式（所有性能等級(jí)）。

AES 128位加密協(xié)處理器可用于安全的數(shù)據(jù)傳輸。sts1tx支持不同的調(diào)制方案的性能，GFSK，OOK，問(wèn)，和MSK。發(fā)送的數(shù)據(jù)字節(jié)緩沖FIFO（TX FIFO），可通過(guò)SPI接口的主機(jī)處理。

Key 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

主要特點(diǎn)

頻段：150-174兆赫，300-348兆赫，387-470兆赫，779-956兆赫

調(diào)制方案：性能，GFSK，MSK，GMSK，OOK，問(wèn)

從1到500 kbps的數(shù)據(jù)率的空氣

非常低的功耗（21 mA的TX在11 dBm）

可編程通道間距（12.5千赫分鐘）

可編程的輸出功率為16 dBm

快速啟動(dòng)和頻率合成器的穩(wěn)定時(shí)間（6μs

集成溫度傳感器

電池指示和低電量檢測(cè)器

Tx FIFO緩沖區(qū)（96字節(jié)）

通過(guò)SPI接口配置

AES 128位加密協(xié)處理器

完全集成的超低功率鋼筋混凝土振蕩器

內(nèi)部定時(shí)器和外部事件喚醒

具有動(dòng)態(tài)負(fù)載長(zhǎng)度的柔性數(shù)據(jù)包長(zhǎng)度

自動(dòng)結(jié)直腸癌

FEC和交織

數(shù)據(jù)的白化

無(wú)線M-Bus，EN 300，220，15（15.205，F(xiàn)CC cfr47 15.209，15.231，15.247，15.249），和ARIB性病t-67，T93，t-108兼容

qfn20 4x4毫米R(shí)oHS封裝

工作溫度范圍從- 40°到85°