RN2903 datasheet(3/24 Pages) MICROCHIP

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 2015 Microchip Technology Inc.

DS50002390B-page 3

RN2903

1.0

DEVICE OVERVIEW

The RN2903 transceiver module features LoRa

Technology RF modulation, which provides long range

spread spectrum communication with high interference

immunity.

Using

LoRa Technology

modulation

technique,

RN2903 can achieve a receiver sensitivity of -146 dBm.

The high sensitivity combined with the integrated

+18.5 dBm output power amplifier yields industry

leading link budget, which makes it optimal for

applications requiring extended range and robustness.

FIGURE 1-1:

RN2903 TOP VIEW

LoRa Technology modulation also provides significant

advantages in both blocking and selectivity compared

to the conventional modulation techniques, solving the

traditional design compromise between extended

range,

interference

immunity,

and

low-power

consumption.

The RN2903 module delivers exceptional phase noise,

selectivity, receiver linearity, and IIP3 for significantly

lower power consumption. The level of conductive

harmonics is below -70 dBm. Figure 1-1, Figure 1-2,

and Figure 1-3 show the top view, the pinout, and the

block diagram of the module.

FIGURE 1-2:

RN2903 PIN DIAGRAM

FIGURE 1-3:

RN2903 BLOCK DIAGRAM

GND

UART_RTS

UART_CTS

RESERVED

UART_TX

UART_RX

GND

GPIO13

GPIO12

GND

VDD

GPIO11

GPIO10

28 GND

VDD

GND

TEST0

TEST1

RESET

GPIO0

GPIO1

GPIO2

GPIO3

GPIO4

GPIO5

GPIO6

GPIO7

GPIO8

GPIO9

User Hardware:

Status LEDs,

witches, ogic IOs, etc.

RN2903 Module

MCU

LoRa

® Technology

Radio

Command Processor

14 GPIO Pins

Real Time

Clock

LoRaWANTM Protocol Stack

SPI

UART

32768 Hz

Crystal

EUI-64

EEPROM

Host MCU

Antenna

915 MHz

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