DRF1262T 22dBm LoRa Long Range RF Front-end Module DRF1262T V1.01 Features:
Frequency Range: 915MHz Modulation: FSK/GFSK/MSK/LoRa SPI Data Interface Sensitivity: -147dBm Max.Output Power: +22dBm Data Rate: <300 kbps 127dB dynamic Range RSSI Excellent blocking immunity Preamble detection Automatic RF sense and CAD monitor Built-in bit synchronizer for clock recovery Packet engine up to 256 bytes with CRC Working Temperature: -40C ~+85C Build-in temperature sensor Standby current: 1uA Supply voltage: 1.8~3.6V Applications Remote Control Smart metering Home Automation Personal data logger Wireless sensor network Remote keyless entry Wireless PC peripherals DESCRIPTION DRF1262T is a type of 915MHz RF front-end transceiver module based on SX1262 from Semtech Corporation. It keeps the advantages of RFIC SX1262 but simplifies the circuit design. The high sensitivity (-147dBm) in LoRa modulation and Max. 22dBm power output make the module suitable for low range and low data rate applications. DRF1262T module consists of RFIC SX1262, TCXO and antenna matching circuit. The antenna Revision 1.01 Page 1 of 6 April. 2019 DRF1262T port is well matched to standard 50 Ohm impedance. Users dont need to spend time in RF circuit design and just choose suitable antennas for different applications. DRF1262T operates at 1.8~3.3V with extra low standby current which makes it suitable for battery powered-up applications. DRF1262T adopts 1ppm high accuracy TCXO which makes it possible to use narrower bandwidth to achieve the high sensitivity up to -147dBm. DORJI also provides DRF1268T for 433MHz TCXO version of sx1268 module. Users can use the testing kit DAD06 to test the basic function on ST Nucleo-L053R8 or Arduino UNO board. PIN FUNCTIONS Figure 1: DRF1262T Pin Layout
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Description 50 Ohm Impedance port Ground (0V) One control pin of RF switch Ground (0V) Ground (0V) Can be Ground (0V) or NC Ground (0V) Normal 3.3V It is connected to one control pin of RF switch internally PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Function ANT Ground Input Ground Ground Name ANT GND SW GND GND GND/NC TCXO pin GND VDD DIO2 DIO1 BUSY RST MISO MOSI SCK NSS Ground Power Output Input/Output Multipurpose digital IO Input/Output Input/Output Output Input Intput Input Busy indicator Reset signal, active low SPI slave output SPI slave input SPI clock SPI Slave Select Table 1: DRF1262T Pin Functions Revision 1.01 Page 2 of 6 April. 2019 ELECTRICAL SPECIFICATIONS Symbol VCC Temp Freq IDD_R IDD_T IDD_S Pout Sen ZANT Parameter (condition) Supply Voltage Operating temperature range Frequency range @ 868MHz Frequency range @ 915MHz Current in receive mode Current in transmit mode Current in sleep mode. Max. output power @868Mhz Max. output power @915Mhz Receiver sensitivity @868MHz Receiver sensitivity @915MHz Antenna Impedance DRF1262T Max. 3.6 85 878 928 1
-147
-147 Units V C MHz MHz mA mA uA dBm dBm dBm dBm Ohm Min. 1.8
-40 862 900 Typ. 3.3 25 868 915 5.8 132 20.8 20.5 50 Table 2: DRF1262T Electrical Specifications ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO TST Parameter Supply Voltage Input voltage Output voltage Storage temperature Min.
-0.3
-0.3
-0.3
-40 Max. 3.6 VCC+0.3 VCC+0.3 125 Units V V V C Table 3: DRF1262T Maximum Ratings Revision 1.01 Page 3 of 6 April. 2019 MODULE SCHEMATIC DRF1262T Figure 2: DRF1262T Schematic Revision 1.01 Page 4 of 6 April. 2019 MECHANICAL DATA Unit: mm DRF1262T Figure 3: Mechanical Dimension REFERENCE DOCUMENTS 1. SX1262 Datasheet 2. LoRa Calculator 3. LoRa Low Energy Design Guide 4. LoRa Modem Designer's Guide 5. SX1262 Development Kit User Guide Revision 1.01 Page 5 of 6 April. 2019 Dorji Applied Technologies A division of Dorji Industrial Group Co., Ltd Add.: Xinchenhuayuan 2, Dalangnanlu, Longhua, Baoan district, Shenzhen, China 518109 Tel:
Fax.:
Email:
Web:
0086-755-28156122 0086-755-28156133 dorji@dorji.com http://www.dorji.com DRF1262T Dorji Industrial Group Co., Ltd reserves the right to make corrections, modifications, improvements and other changes to its products and services at any time and to discontinue any product or service without notice. Customers are expected to visit websites for getting newest product information before placing orders. or other devices These products are not designed for use in life support appliances, products where malfunction of these products might result in personal injury. Customers using these products in such applications do so at their own risk and agree to fully indemnify Dorji Industrial Group for any damages resulting from improper use. Revision 1.01 Page 6 of 6 April. 2019 ____________________________________________________________________________________________________________ DRF126xT reference design 1. The connection between module(DRF126xT) and antenna SMA head antenna requires 50 OHN impedance line. Refer to the following figure for routing mode. 1, ____________________________________________________________________________________________________________ 2. The connection between module(DRF126xT) and antenna SMA-90 head antenna requires 50 OHN impedance line. Refer to the following figure for routing mode. ____________________________________________________________________________________________________________ 3. The connection between module(DRF126xT) and antenna SMA head antenna requires 50 OHN impedance line. Refer to the following figure for routing mode. ____________________________________________________________________________________________________________ The module(DRF126xT) recommended reflux curve refers to IPC/JEDEC standard. The maximum temperature is less than 250 degrees Celsius and is not more than 2 times. FCC Statement:
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. FCC Radiation Exposure Statement This modular complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This modular must be installed and operated with a minimum distance of 20 cm between the radiator and user body. Important Notice to OEM integrators:
If the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains Transmitter Module FCC ID: 2AS5Y-62T Or Contains FCC ID: 2AS5Y-62T When the module is installed inside another device, the user manual of the host must contain below warning statements;
1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause undesired operation. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. 2. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. The devices must be installed and used in strict accordance with the manufacturer's instructions as described in the user documentation that comes with the product. Any company of the host device which install this modular with limit modular approval should perform the test of radiated & conducted emission and spurious emission,etc. according to FCC part 15C : 15.249 and 15.209 &
15.207 ,15B Class B requirement, Only if the test result comply with FCC part 15C : 15.249 and 15.209 &
15.207 ,15B Class B requirementthen the host can be sold legally. IC STATEMENT This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canadas licence-exempt RSS(s). Operation is subject to the following two conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may cause undesired operation of the device Cet appareil contient des metteurs / rcepteurs exempts de licence conformes aux RSS (RSS) d'Innovation, Sciences et Dveloppement conomique Canada. Le fonctionnement est soumis aux deux conditions suivantes :
(1) Cet appareil ne doit pas causer d'interfrences.
(2) Cet appareil doit accepter toutes les interfrences, y compris celles susceptibles de provoquer un fonctionnement indsirable de l'appareil. IC Radiation Exposure Statement This modular complies with IC RF radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. If the IC number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains IC: 24995-62T when the module is installed inside another device, the user manual of this device must contain below warning statements;
1. This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canadas licence-exempt RSS(s). Operation is subject to the following two conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may cause undesired operation of the device. 2. Cet appareil contient des metteurs / rcepteurs exempts de licence conformes aux RSS (RSS) d'Innovation, Sciences et Dveloppement conomique Canada. Le fonctionnement est soumis aux deux conditions suivantes :
(1) Cet appareil ne doit pas causer d'interfrences.
(2) Cet appareil doit accepter toutes les interfrences, y compris celles susceptibles de provoquer un fonctionnement indsirable de l'appareil. The devices must be installed and used in strict accordance with the manufacturer's instructions as described in the user documentation that comes with the product. SHEN ZHEN GERBOLE ELEC. TECHNOLOGY CO. , LTD 915MHz Antenna technical indicators Mode:TLB-915-JW-2.5NSW915-WT36 Electrical Data Frequency Range(MHz):902~928 V.S.W.R :<=2.0 Input Impedance( ) :50 Max-power(W) :10 Gain(dBi):2.15 Polarization :Vertical Weight(g):10 Height(mm):48 Cable Length(CM):no Color: Black Connector Type :SMA/JW Description:
TLB-915-JW-2.5N is designed for 915MHz frequency band communication system. It has the advantages of low VSWR, smart size and easy installment. Each antenna is strictly tested before shipment in the factory. Antenna standing wave ratio diagram SHEN ZHEN GERBOLE ELEC. TECHNOLOGY CO. , LTD Antenna size chart