RN2903 - Uncategorized Microchip - Free user manual and instructions
Find the device manual for free RN2903 Microchip in PDF.
Pick your language and provide your email: we'll send you a specifically translated version.
| Product Type | Wireless Transceiver Module (LoRa) |
| Manufacturer | Microchip Technology |
| Model | RN2903 |
| Frequency Range | 902-928 MHz (ISM band) |
| Modulation | LoRa and FSK |
| Interface | UART (3.3V logic levels) |
| Maximum Output Power | +18.5 dBm |
| Receiver Sensitivity | -148 dBm (typical) |
| Operating Voltage | 2.7 to 3.6 V DC |
| Current Consumption (TX) | 130 mA (at +18.5 dBm) |
| Current Consumption (RX) | 12.8 mA (typical) |
| Sleep Current | 2.0 µA (typical) |
| Dimensions (L×W×H) | 20.2 x 18.0 x 3.5 mm (typical) |
| Weight | 2.0 g (typical) |
| Antenna Connector | U.FL (IPEX) connector |
| Operating Temperature | -40°C to +85°C |
| Data Rate | Up to 300 kbps (FSK) |
| Range (outdoor line-of-sight) | Up to 15 km (depending on environment) |
| Protocol Support | LoRaWAN, proprietary point-to-point |
| Compliance | FCC/IC certified |
| Spare Parts | None field-replaceable; mount as SMD module |
| Maintenance | Keep contacts away from dust; avoid corrosion |
| Safety | ESD sensitive; handle with precautions |
Frequently Asked Questions - RN2903 Microchip
How do I connect the RN2903 to my microcontroller?
Connect the UART interface (TX, RX, GND) of the module to the microcontroller's serial peripheral. Ensure the logic levels are 3.3V to avoid damaging the module.
What is the maximum transmit power?
The maximum transmit power is +18.5 dBm, configurable in software. This provides a strong link budget for long-range communication.
How can I reduce power consumption?
Use the sleep mode (2.0 µA typical) and reduce output power when possible. Also lower the data rate in LoRa mode to increase sensitivity and efficiency.
What is the range of the RN2903?
In open line-of-sight, the RN2903 can achieve ranges up to 15 km with appropriate antennas and settings. Range depends on obstacles, antenna quality, and data rate.
Does the RN2903 support LoRaWAN?
Yes, the RN2903 supports LoRaWAN protocol out of the box. It can be used with any LoRaWAN gateway and network server.
How do I update the firmware?
Firmware updates are performed via the UART interface using Microchip's RF1 configuration utility. Ensure you have a stable power source during the update.
What antenna should I use?
The RN2903 has a U.FL connector for a 915 MHz antenna. Use an antenna rated for the same frequency band with a 50-ohm impedance for optimal performance.
How do I configure the module?
Configuration is done via ASCII commands sent over UART. The module includes a command set for setting frequency, power, modulation, and network keys.
What is the supply voltage requirement?
The operating voltage range is 2.7 to 3.6 V DC. A 3.3V regulator is typically used to power the module from a battery or other supply.
Is the RN2903 FCC certified?
Yes, the RN2903 is FCC and IC certified for use in the 915 MHz ISM band. This reduces compliance effort when integrating into end products.
User questions about RN2903 Microchip
0 question about this device. Answer the ones you know or ask your own.
Ask a new question about this device
No questions yet. Be the first to ask one.
Download the instructions for your Uncategorized in PDF format for free! Find your manual RN2903 - Microchip and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. RN2903 by Microchip.
USER MANUAL RN2903 Microchip
Manual assistant
Powered by Anthropic
Waiting for your message
Product information
Brand : Microchip
Model : RN2903
Category : Uncategorized