TRM-915-R25

25 Series RF Transceiver Module The 25 Series RF transceiver module is designed for reliable bi-directional transfer of digital data over distances of up to 1 mile (1.6km) line of sight. Operating in the 902 to 928MHz frequency band, the module is capable of generating +13dBm into a 50-ohm load and achieves an outstanding typical sensitivity of 105dBm. The module implements a Frequency Hopping Spread Spectrum (FHSS) protocol along with networking and assured delivery features. It has a Universal Asynchronous Receiver Transmitter (UART) serial interface that can be connected 0.935 directly to microcontrollers, RS-232 converters or USB adaptors. The module (23.75mm) automatically handles all radio functions resulting in a UART-to-antenna wireless link. All configuration settings and data are accessed through the UART interface. 0.800 Interface: The transceiver has a UART serial interface and is designed to create a (20.32mm) UART-to-antenna wireless solution. Power: Low power modes as well as adjustable transmitter output power allow the designer to optimize the current consumption for the available power supply in the 0.110 application. (2.80mm) Configuration: The transceiver contains several registers that control its configuration and operation. The registers are accessed through the UART and Specifications enable a great deal of optimization. Operating Voltage 3.0 to 3.6V TX Supply Current Protocol: The transceiver has a robust built-in protocol. A Carrier Sense Multiple 13dBm 65mA Access (CSMA) algorithm makes sure the channel is clear before sending data. Networking and assured delivery enable many system configurations. 2dBm 30mA RX Supply Current 20mA Evaluation Module: An evaluation module is available that has the module on a Standby Current 2.1mA board with an antenna connector and voltage regulator. This module has obtained Deep Sleep Current 3A United States FCC certification. This greatly reduces the expense and time to TX Output Power 2 to +13dBm implement a wireless solution. Max RX Sensitivity 105dBm Max Data Rate 115.2kbps Operating 40 to +85C Temperature Range Applications Direct RS-232/422/485 Wire replacement Asset tracking Automated meter reading Industrial / home automation Remote data logging Wireless sensors Long range data links Revised 3/29/2015Typical Applications The figure below shows the 25 Series transceiver connected to a microcontroller. ANTENNA 15 14 GND GND GND GND 16 13 GND GND ANT 17 12 GND GND GND GND 18 11 GND GND RESET GPIO 10 C2D 9 RSSI 19 8 VCC VCC CMD RSP GPIO 7 CTS GPIO 6 TXD RXD 5 RXD TXD 4 CMD GPIO 3 BE GPIO GND GPIO GND The 25 Series Transceivers are configured through a UART interface. Configuration Options Set the frequency hop pattern Configure the transmitter output power level Configure the data rate Configure the module address and network mode Configure the power state Configure the packet size and parameters Ordering Information Product Part No. Description Radiotronix Part No. TRM-915-R25 900MHz 25 Series FHSS Data Transceiver Wi.232FHSS-25-R EVM-915-025-FCx 900MHz 25 Series FHSS Data Transceiver Evaluation Module Wi.232FHSS-25-FCC-xx-R x = R for right angle connector, S for straight connector 159 Ort Lane, Merlin, OR, US 97532 Phone: +1 541 471 6256 Fax: +1 541 471 6251 25 Series RF Modules www.linxtechnologies.com 1 GND 2 EX