Data Sheet

Datasheet
iM980A
iM980A_Datasheet_mcf88.docx, v1.2 Page 4
2. Module Overview
The iM980A is an ultra-long range, high-performance, pre-certified module for
wireless communication. It operates in the license free 915 MHz ISM frequency
band and includes all necessary passive components for wireless
communication as depicted in the following figure.
Microcontroller
STM32L151Cx
RF
Sx1272
IRQ
UART
SPI
I² C
GPIO
Analog
32 MHz
32 . 768 kHz
VDD
2.4. to 3. 6 V
RF
50 Ω
Matching
Network
16 MHz
Figure 2-1: Block Diagram of Radio Module iM980A
The iM980A uses Semtech’s patented LoRa modulation technique which
combines spread spectrum modulation and forward error correction
techniques to increase the range and robustness of radio communication links
compared with traditional FSK or OOK based modulation. Typically examples
of iM980A receive performances are given in the following table.
Signal Bandwidth/[kHz]
Spreading
Factor
Sensitivity/[dBm]
125
7
-123.2
125
12
-137.5
250
7
-120.7
250
12
-134.6
500
7
-115.5
500
12
-130.3
Table 2-1: Typically Radio Performance of iM980A
This high sensitivity combined with the integrated power amplifier yields
industry leading link budget.
The module is solderable like a SMD component and can easily be mounted
on a simple carrier board with a minimum of required external connections. It
is RoHS compliant and qualified in accordance to FCC Part 15.