LR1110
User Manual Rev.1.0
UM.LR1110.W.APP March 2020
12 of 130
Semtech
www.semtech.com
1. Introduction
1.1 Scope
This document aims at providing complete information on how to use the LR1110 transceiver in an application. It covers
both hardware and software aspects. For a definition of the LR1110 functionalities and circuit specifications, please refer to
the LR1110 Datasheet.
Figure 1-1: LR1110 Block Diagram
1.2 Overview
LR1110 is a long range, ultra-low power transceiver aimed to enhance LoRa®-based geolocation applications. It supports
LoRa® and (G)FSK modulations for LPWAN use cases. The device is highly configurable over the 150MHz-960MHz ISM bands
to meet different application requirements utilizing the global LoRaWAN® standard or proprietary protocols.
Besides the world-wide sub-GHz transceiver capabilities, the device feature a very low power multi-band front-end that can
acquire several signals of opportunity for geolocation purposes (802.11b/g/n Wi-Fi AP MAC addresses, GNSS (GPS, BeiDou)
satellites signals). The acquired information is transmitted using a LPWAN network to a geolocation server, which computes
the position of the object.
LNA
LF0
LNA
LF1
PA
HP LF
PA
LP LF
RFO_HP_LF
RFO_LP_LF
RFI_P_LF0
RFI_N_LF0
RFI_P_LF1
RFI_N_LF1
LNA
HF
Balun
&
Match
RFIO_HF
ADC
PLL
VBAT_RF
VR_PA
VREG
DCC_SW
VBAT
VBAT_RF
DC-DC
LDO
BG/IREF
POR/
BRN
PDS
REGs
HFXOSC
32MHz
CKS
LFXOSC
32kHz
HFRC
32MHz
LFRC
32kHz
XTA
XTB
DIO11/
32k_P
DIO10/
32k_N
VTCXO
DIO0/ BUSY
DIO1
DIO2
DIO3
DIO4
DIO9
DIO8
DIO7
DIO6
DIO5
150 – 960 MHz, TX
150 – 960 MHz,
RX
2.412 – 2.484 GHz,
RX
REG_PA
Digital Baseband
+ DSP
CPU
RAMROM
NVM
IO SWM
Digital Front-End
LoRa
modem
(G)FSK
modem
NRESET
1.5 – 1.6 GHz,
RX
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