DRF1268T DORJI | Alldatasheet
Document overview
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Technical content
Revision1.00 Page of 6 Dec.20181 DRF1268T 22dBm LoRa Long Range RF Front-end Module V1.00 Features: FrequencyRange:433MHz Modulation:FSK/GFSK/MSK/LoRa SPIDataInterface Sensitivity:-147dBm OutputPower:+22dBm DataRate:<300kbps 127dBdynamicRangeRSSI Excellentblockingimmunity Preambledetection AutomaticRFsenseandCADmonitor Built-inbitsynchronizerforclockrecovery Packetengineupto256byteswithCRC WorkingTemperature:-30°C~+85°C Build-intemperaturesensor Standbycurrent: ≤ 1uA Supplyvoltage:1.8~3.3V
Applications
RemoteControl Smartmetering HomeAutomation Personaldatalogger Wirelesssensornetwork Remotekeylessentry WirelessPCperipherals
DESCRIPTION
DRF1268Tisatypeof433MHzRFfront-endtransceivermodulebasedonSX1268fromSemtech Corporation.ItkeepstheadvantagesofRFICSX1268butsimplifiesthecircuitdesign.Thehigh sensitivity(-147dBm)inLoRamodulationand22dBmhighpoweroutputmakethemodule suitableforlowrangeandlowdatarateapplications. DRF1268TmoduleconsistsofRFICSX1268,thinSMDcrystalandantennamatchingcircuit.
Revision1.00 Page of 6 Dec.20182 Theantennaportiswellmatchedtostandard50Ohmimpedance.Usersdon’tneedtospendtime inRFcircuitdesignandjustchoosesuitableantennasfordifferentapplications.DRF1268T operatesat1.8~3.3Vwithextralowstandbycurrentwhichmakesitsuitableforbattery powered-upapplications.DRF1268Tadopts±1ppmhighaccuracyTCXOwhichmakesitpossible tousenarrowerbandwidthtoachievethehighsensitivityupto-147dBm.DORJIalsoprovides DRF1262Tfor868MHz/915MHzTCXOversionofsx1262module.Userscanusethetestingkit DAD06totestthebasicfunctiononSTNucleo-L053R8orArduinoUNOboard. PIN FUNCTIONS Figure 1: DRF1268T Pin Layout PIN Name Function Description
1 ANT ANT 50OhmImpedanceport
2 GND Ground Ground(0V)
3 SW Input OnecontrolpinofRFswitch
4 GND Ground Ground(0V)
5 GND Ground Ground(0V)
6 GND/NC TCXOpin CanbeGround(0V)orNC
7 GND Ground Ground(0V)
8 VDD Power Normal3.3V
9 DIO2 Output ItisconnectedtoonecontrolpinofRFswitchinternally
10 DIO1 Input/Output MultipurposedigitalIO
11 BUSY Input/Output Busyindicator
12 RST Input/Output Resetsignal,activelow
13 MISO Output SPIslaveoutput
14 MOSI Input SPIslaveinput
15 SCK Intput SPIclock
16 NSS Input SPISlaveSelect
Table 1: DRF1268T Pin Functions
Revision1.00 Page of 6 Dec.20183 ELECTRICALSPECIFICATIONS Symbol Parameter (condition) Min. Typ. Max. Units VCC SupplyVoltage 1.8 3.3 V Temp Operatingtemperaturerange -30 25 85 °C Freq Frequencyrange 410 433 460 MHz IDD_R Currentinreceivemode 5.7 mA IDD_T Currentintransmitmode 108 mA IDD_S Currentinsleepmode. 1 uA Pout Max.outputpower@915Mhz 20.8 dBm Sen Receiversensitivity@SF=12&BW=15.36KHz -147 dBm ZANT Antennaportimpedance 50 Ohm Table 2: DRF1268T Electrical Specifications ABSOLUTE MAXIMUM RATINGS Symbol Parameter Min. Max. Units VCC SupplyVoltage -0.3 3.6 V VI Inputvoltage -0.3 VCC+0.3 V VO Outputvoltage -0.3 VCC+0.3 V TST Storagetemperature -40 125 °C Table 3: DRF1268T Maximum Ratings
Revision1.00 Page of 6 Dec.20184 MODULE SCHEMATIC Figure 2: DRF1268T Schematic
Revision1.00 Page of 6 Dec.20185 MECHANICAL DATA Unit:mm Figure 3: Mechanical Dimension REFERENCE DOCUMENTS 1. SX1262Datasheet 2. LoRaCalculator 3. LoRaLowEnergyDesignGuide 4. LoRaModemDesigner'sGuide 5. SX1262DevelopmentKitUserGuide 6. SX1262SX1268TestingKitDAD06
Revision1.00 Page of 6 Dec.20186 DorjiAppliedTechnologies AdivisionofDorji Industrial Group Co., Ltd Add.: Xinchenhuayuan 2, Dalangnanlu, Longhua, Baoandistrict,Shenzhen,China518109 Tel: 0086-755-28156122 Fax.: 0086-755-28156133 Email: dorji@dorji.com Web: http://www.dorji.com 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. These products are not designed for use in life support appliances, devices or other 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 resultingfromimproperuse.