LoRa2021: 160mW Multi-Band Wireless Communication Module

LoRa2021: 160mW Multi-Band Wireless Communication Module

The LoRa2021 module is based on SEMTECH's LR2021 chip, an ultra-low power, long-range LoRa transceiver. It supports terrestrial ISM band communication in the Sub-GHz and global 2.4GHz spectrums, as well as the S-band for satellite connectivity.

The LoRa2021 supports LoRa, (G)FSK, (G)MSK, FLRC, 4-FSK, O-QPSK, and LR-FHSS (transmit-only). The LR2021 supports the LoRaWAN communication protocol. When integrating with third-party products, it is compatible with various low-power wireless protocols, including Amazon Sidewalk, W-MBUS, Wi-SUN FSK, and Z-Wave.

The LoRa2021 is produced and tested strictly using lead-free processes and is compliant with RoHS and REACH standards

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Parameters	Test condition	Min.	Typ.	Max	Unit
Voltage range		1.8	3.3	3.6	V
Operating Temperature		-40	25	85	℃
Maximum Input Signal			10		dBm
Current Consumption
Transmit Current	@433MHz		< 120		mA
Transmit Current	@2.4GHz		< 35		mA
Receive Current	@3.3V,@DCDC,2.4GHz		< 7		mA
	@3.3V,@LDO,2.4GHz		< 11		mA
	@3.3V,@DCDC, Sub-GHz		< 6		mA
	@3.3v,@LDO, Sub-GHz		< 9.3		mA
Sleep Current	@3.3V		≤2		uA
RF Parameters
Frequency Range	@433MHz	400		460	MHz
	@470MHz	470		510	MHz
	@868MHz	850		890	MHz
	@915MHz	900		940	MHz
Transmit Power	@Sub-GHz	19	21	22	dBm
Transmit Power	2.4GHz	10	11	12	dBm
Receive Sensitivity	BW=62.5KHz, SF=12 @Sub-GHz		-143		dBm
	BW=125KHz, SF=10 @Sub-GHz		-136
	BW=125KHz, SF=10 @S frequency band		-131		dBm
	BW=406KHz, SF=12 @2.4GHz		-134		dBm
Frequency Error	@Crystal		10		ppm
Frequency Error	@TCXO		0.5		ppm
Modulation Rate (@sub-GHz)	@LoRa	0.0458		125	Kbps
	@FRLC	260		2600	Kbps
	@FSK,@863-2.5GHz	0.5		2000	Kbps
Modulation Rate (@S Frequency bands)	@LoRa	0.0458		125	Kbps
Modulation Rate (@2.4GHz)	@LoRa	0.476		101.5	Kbps

Features

Sub-GHz Bands: 433/470/868/915MHz
(Customizable range: 150~960 MHz)
High frequency band: 1900 / 2400MHz
(Customizable range: 1500~2500 MHz)
Transmission distance: >5000 meters at sub-GHz in open area
Sub-GHz reception sensitivity: up to -143dBm @BW=62.5 KHz, SF=12
2.4GHz reception sensitivity: up to-137dBm @ BW=200KHz, SF=12
Built-in electrostatic protection circuit
Supports LR-FHSS
FLRC: modulation rate up to 2.6 Mbps
LoRa: modulation rate up to 125 kbps
4th Generation LoRa IP technology
Simultaneous reception with multiple Spreading Factors (SF)
Enhanced CAD (Channel Activity Detection)
Higher frequency offset tolerance (for harsh RF environments):
Supports multiple communication protocols:
LoRa / LoRaWAN® (Sub-GHz + 2.4GHz)
Bluetooth® LE 5.0
IEEE® 802.15.4 (Thread®/Zigbee™)
Amazon Sidewalk, Wireless M-BUS,
Wi-SUN FSK, and Z-Wave, etc.
Transmit power is adjustable, up to 22dBm
Sleep current ≤ 2µA
Receive current < 7mA
Small size, stamp hole design

Applications

Drones/ UAV Applications
Smart home/Smart agriculture
Remote irrigation
Industrial manufacturing

A typical schematic circuit diagram illustrating the connection between the LoRa2021 module and a Host Microprocessor. It details the wiring for the SPI interface (MISO, MOSI, SCK, NSS), power supply (3.3V VCC, GND), control pins (nRST, BUSY, DIO), and dual antenna ports.

A pin definition diagram for the LoRa2021 module, presenting both the top view with the metal shield and the bottom PCB view. It clearly labels the 18 pins, including power, SPI data lines, and separate antenna interfaces for Sub-GHz (ANT) and 2.4G/S-band (2.4G/S_ANT).

Pin NO.	Pin name	I/O	Description
1	VCC		Connect to the positive power supply.
2,8,11,12,18	GND		Connect to the negative power supply.
3	MISO	O	SPI data output
4	MOSI	I	SPI data input
5	SCK	I	SPI clock input
6	NSS	I	SPI chip select input
7	BUSY	O	Used for status indication, refer to the chip datasheet for details.
9	ANTA ANT		@sub-GHz band antenna interface, external 50-ohm antenna.
10	2.4/S_ANTA		2.4G and S band antenna interface,external 50-ohm antenna.
13	VTCXO	O	Can provide power for an external TCXO.
14	RST	I	Reset trigger input, refer to the chip datasheet for details.
15	DIO9	IO	Multipurpose digital interface, refer to the chip datasheet for details.
16	DIO8	IO	Multipurpose digital interface, refer to the chip datasheet for details.
17	DIO7	IO	Multipurpose digital interface, refer to the chip datasheet for details.

A technical drawing showing the mechanical dimensions of the LoRa2021 module. It displays the top, bottom, and side views with precise measurements, indicating a module size of 19.72mm x 15.0mm and a pin pitch of 1.2mm.

LoRa2021: 160mW Multi-Band Wireless Communication Module

Features

Applications

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