New Product Launch: 2W High-Power LR1121 Wireless Communication Module -- LoRa1121F33-1G9

By sdga:

LoRa1121F33-1G9 module is built on SEMTECH's LR1121 chip, an ultra-low power, long-range LoRa transceiver supporting Sub-GHz and satellite-connected S-band communication. The LoRa1121F33-1G9 supports LoRa, (G)FSK modulation, Sigfox protocol, and LR-FHSS. It is compatible with the LoRaWAN communication protocol and can function as a LoRaWAN node. Additionally, it offers flexible configuration options to meet the requirements of various applications and proprietary protocols.

Features of LoRa Module LoRa1121F33-1G9

Sub-GHz Bands ：433/470MHz 2W
Sub-GHz Bands: 868/915MHz 1W (Customizable : 150~960 MHz)
S band: 1900MHz～2000MHz 0.8W
S band sensitivity : up to -132 dBm @ BW=125 KHz, SF=12
Sub-GHz reception sensitivity: up to-144dBm @ BW=62.5 KHz, SF=12
Electrostatic Protection (ESD)
Supports LR-FHSS
Supports LoRaWAN and Sigfox protocol
Supports AES-128 encryption and decryption
Sub-GHz transmission exceeds 10 km in open areas
Sleep current < 15µA
Receive current < 9mA
Small size, stamp hole design

Applications of LoRa Module LoRa1121F33-1G9

Drones
Remote irrigation
Smart home/Smart agriculture
Industrial manufacturing

Block Diagram

Electrical Characteristics

Parameters	Test condition	Min.	Typ.	Max	Unit
Voltage range		3.0	5	5.5	V
Operating Temperature		-40	25	85	℃
Maximum Input Signal			10		dBm
Current Consumption
Transmit Current	@433MHz		< 900		mA
Transmit Current	@1.9GHz		< 1000		mA
Receive Current			< 9		mA
Sleep Current			< 15		uA
RF Parameters
Frequency Range	@433MHz	400		470	MHz
	@470MHz	470		510	MHz
	@868MHz	850		890	MHz
	@915MHz	900		940	MHz
Transmit Power	@Sub-GHz	20		33	dBm
Transmit Power	@S Frequency Band	5		29	dBm
Receive Sensitivity	BW=62.5KHz,SF=12 @Sub-GHz		-142		dBm
Receive Sensitivity	BW=125KHz,SF=12 @S Frequency Band		-132		dBm
Frequency Error			10		ppm
Modulation Rate (@sub-GHz)	@LoRa	0.091		62.5	Kbps
Modulation Rate (@sub-GHz)	@FSK	0.6		300	Kbps
Modulation Rate (@S Frequency bands）	@LoRa	0.292		87.5	Kbps

Typical Schematic Circuit

Technical Specifications

1) Power Level Comparison Table (433MHz & 1.9GHz)

Power Level	433MHz		1.9GHz
Power Level	Output Power（dBm)	Current（mA)	Output Power（dBm)	Output Power（mA)
0	20.1	419	5.0	112
1	22.6	427	8.7	131
2	25.3	445	11.0	152
3	27.2	485	13.7	181
4	29.3	551	16.7	233
5	30.8	628	19.8	308
6	31.7	691	22.7	404
7	32.2	734	23.9	434
8	32.6	775	24.4	482
9	32.9	817	29.6	920

2) Voltage and Power Comparison Table

Operating Voltage（v)	433MHz		1.9GHz
Operating Voltage（v)	Power（dBm)	Current（mA)	Power（dBm)	Current（mA)
3.0	28.0	506	27.8	745
3.5	29.5	604	29.1	846
4.0	30.7	678	30.0	912
4.5	31.7	736	30.3	920
5.0	32.6	810	30.3	920
5.5	33.3	844	30.3	920

Mechanism Dimension(Unit:mm)

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Appendix 1: Function Demonstration Board

1）Function Description

The LoRa1121F33-1G9 high-power wireless module DEMO board primarily implements the following functions: inter-module communication, measuring module transmit power, measuring receive sensitivity, and measuring sleep current.

2）Key Functions

The demo board has three buttons: SET, UP, and DOWN. Their functions are as follows:

Buttons	Functions
SET Key Short Press	Confirm or enter the next level of the interface
SET Key Long Press	Return to the previous interface
UP Key Short Press	Move cursor up or increase parameter by 1
UP Key Long Press	Increase parameter
DOWN Key Short Press	Move cursor down or decrease parameter by 1
DOWN Key Long Press	Decrease parameter

Operation Method:

Ensure normal power supply, then toggle the power switch to turn on the power. The DEMO board screen will display the current function interface.Short press the SET key to enter the setting mode. To select an option, short press the SET key; to return, long press the SET key. Use the UP and DOWN keys to select the parameter you want to adjust. Finally, short press the SET key to complete the modification.