ZL70550 Ultra-Low-Power Sub-GHz RF Transceiver Microsemis ZL70550 RF transceiver is the lowestpower subGHz radio for high or low duty cycle, wireless sensor applications. The device is optimized for very low power consumption in both active and sleep states, making it the leading choice for sensor networks that are powered by a coin cell battery or an energy harvesting power source. The ZL70550 device is also highly integrated and requires, in addition to the antenna, only a crystal, two decoupling capacitors, and a resistor. Available as a 2mmby3mm CSP , the device enables applications with a very small footprint. The ZL70550 device operates in unlicensed frequency bands between 779 MHz and 965MHz and offers a maximum raw data rate of 200 kbit/s at 2.4mA (typical) with a respectable CSP package actual size: sensitivity of 95dBm. 2 mm 3 mm The device includes the ZStar pr otocol, which is a powerful and highly optimized MAC that performs complete packet Key Features transmissions with acknowledgments and automatic retransmissions on failed receptions. This builtin protocol Ultralow current of 2.4mA in receive and eliminates the need for processor intervention in packet 2.75mA in transmit processing, allowing the processor to go to a powersave state Ultralow sleep current of 10nA or to perform other critical application processing. Additionally, Maximum TX output power of 0dBm the MAC supports other user modes of operation with selectable options like CRC, FEC, and auto length. Maximum RX sensitivity of 106dBm Wide supply range of 1.71 V to 3.6 V Applications Operates between 779 MHz and 965 MHz The ZL70550 ultralowpower transceiver is designed for (915MHz ISM band in North America 868MHz SRD band medium to short range wireless applications, including: in Europe 779MHz to 787MHz band in China 916MHz to Medical monitoring 930MHz and 950MHz to 956MHz bands in Japan) Industrial/building/home automation Supports GFSK modulation Security Raw data rates of 200 kbit/s, 100 kbit/s, or 50 kbit/s Smart cities Very small footprint Advanced metering infrastructure Few external components (crystal, resistor, and twodecoupling capacitors) Asset management Available in 29pin CSP package (2 mm by 3 mm) or in Energy harvesting 32pin QFN package (5 mm by 5 mm) Voice/compressedaudio communications SPI bus slave for packet data and register access Builtin MAC Support for Microsemi ZStar or user protocols Transmit and receive buffer QFN package actual size: Optional automatic CSMA packet transfers 5 mm 5 mm Efficient header optimized for small or large payloads Optional preamble, frame sync, length, FEC, and CRC Industrial temperature range(40C to 85C)ZL70550 Ultra-Low-Power Sub-GHz RF Transceiver ZL70550 WSN Evaluation Kit with Z-Star Protocol The ZL70550 Wireless Sensor Network (WSN) Evaluation Kit ZL70550 WSN Evaluation Kit Contents includes one USB hub and one accelerometer sensor node Each kit contains: to demonstrate a highdatarate, continuousmonitoring application where the node interacts with the hub seamlessly One USB hub (HUB200), including: using Microsemi s ZStar protocol. ZL70550 transceiver with 50 matching network and dualband antenna USB interface to monitor and control the ZStar network from a PC Microcontroller running the ZStar protocol stack while supporting the USB interface Extender board for customer software development One sensor node (NODE200), including: ZL70550 transceiver with 50 matching network and dualband antenna Microcontroller running the ZStar protocol and accelerometer application CR1632 coincell battery Extender board for customer software development The onchip ZStar pr otocol supports Carrier Sense Multiple Software Access (CSMA) packet transactions in a star network Two types of GUI displays (see figure, bottom left): configuration. This robust, proprietary protocol is optimized Main display , allowing configuration and control of sensor for ultralowpower wireless sensor networks and minimizes network both packet size and transaction time while offloading the Realtime graphs of data for up to thr ee sensors application processor. The protocol may be further optimized for specific customer applications (for example, by varying packet Cbased API that runs on a PC supporting all commands to length, data rate, and frequency of transmission). Additionally, the USB hub customers can develop their own hardware and software for Firmware for both USB hub and sensor node their unique sensor application. Source code is available with software license agreement Full documentation Software download includes User s Guide, Source Code Overview, and hardware documentation (board schematics, layout, Gerber files, and Bill of Material (BOM)) for all included boards Optional Sensor Boards Optional sensor boards can be ordered to use with the ZL70550 WSN Evaluation Kit: Main control GUI NODE210, an accelerometer node with a builtin loop antenna Independent data displays for each sensor