Data Sheet

ManualsBrandsRF Solutions ManualsElectronicsLora type long range transmitting module

LAMBDA62

DS-LAMBDA62-6

Description

The LAMBDA62 RF module is a class leading, cost effective radio module featuring the Semtech SX1262

LoRa™ long range providing ultra-long range, spread spectrum communication and high interference im-

munity within minimal current consumption.

This module including crystal, RF Changeover switch, impedance matching network and track layout pro-

vide a simple digital interface and direct antenna connection. This enables a plug in RF solution with maxi-

mum efficiency. Programming of the module is via SPI interface.

The LAMBDA62 Module is CE compliant. Providing that certain procedures are followed. (please refer to

application schematic later in this datasheet).

+22dBm LoRa 868/918MHz Transceiver

Features

• 20KM+ Range

• Integrated LoRa™ Modem Semtech SX1262

• Highly Efficient Integral Impedance Matching Network

• Provides Full Functionality of the RFIC:

• High Rx sensitivity: down to -148 dBm

• Tx +22 dBm @118mA constant RF output

• +14 dBm high efficiency PA

• 170 dB maximum link budget

• Built in RF switch

• Bullet-proof front end: IIP3 = -12.5 dBm

• 89 dB blocking immunity

• Small Form Factor: 23mm x 20mm

• Programmable bit rate up to 300 kbps

• Low RX current of 4.6 mA, (Lora Operating Mode)

• LoRa,FSK,GFSK,MSK,GMSK,OOK modulation

• Built-in bit synchronizer for clock recovery

• Preamble detection

• 127 dB Dynamic Range RSSI

• Automatic RF Sense and CAD with ultra-fast AFC

• Packet engine up to 256 bytes with CRC

• Built-in temperature sensor and low battery indicator

• 868MHz CE Compliant

• 918MHz “Modular” FCC Certified for use in USA

• Australia Certification Pending

Applications

• RF Alarms

• Sensor networks

• Long Range Telemetry

• Meter Reading

• Environmental Sensors

• Building Control & Automation

• Agricultural Applications

C Version

Open Version

Summary of content (15 pages)

PAGE 1
LAMBDA62 +22dBm LoRa 868/918MHz Transceiver Features • 20KM+ Range • Integrated LoRa™ Modem Semtech SX1262 • Highly Efficient Integral Impedance Matching Network • Provides Full Functionality of the RFIC: • High Rx sensitivity: down to -148 dBm • Tx +22 dBm @118mA constant RF output • +14 dBm high efficiency PA • 170 dB maximum link budget C Version • Built in RF switch • Bullet-proof front end: IIP3 = -12.
PAGE 2
LAMBDA62 LoRa Transceiver Part Numbers Open module (no shield can, antenna output on Pin 1) Part Number Description Package LAMBDA62-8S FM Transceiver Module, 868MHz SMT LAMBDA62-8D FM Transceiver Module, 868MHz DIP Part Number Description Package LAMBDA62-9S FM Transceiver Open Module, 918MHz SMT LAMBDA62-9D FM Transceiver Open Module, 918MHz DIP Shielded Module (with shield can, antenna output ufl connector) Part Number Description Package LAMBDA62C-9S FM Transceiver Shielded Module
PAGE 3
LAMBDA62 LoRa Transceiver Pin Description ANT / N/C 1 16 nSEL GND 2 15 SDI Vcc 3 14 SDO RX_SWITCH 4 13 SCLK TX_SWITCH 5 12 RESET BUSY 6 11 N/C DIO1 7 10 N/C DIO2 8 9 DIO3 PIN Definition Direction Function 1 Antenna In/Out Versions without Screen can: Antenna connection “C” Versions with screen can: No Connect 2 GND - Ground connection 3 Vcc In Power connection Enable RX RF Path Active High 4 RX_SWITCH TX PIN5 RX PIN4 In RX Mode 0 1 Enable TX RF Path Activ
PAGE 4
LAMBDA62 LoRa Transceiver Mechanical Dimensions SMT Version Suggested Layout 19.95 +/- 0.5mm PCB Layout 2.5 1.78 1.78 2.54 26.95 +/- 0.5mm 2.54 2.5 1.95 17.45 1.00 2.95 R 0.45 DIP Version 19.95 +/- 0.5mm 2.5 3.55 2.54 26.95 +/- 0.5mm 1.93mm 1.95 1.78 16.29mm 0.6mm 1.00 Page 4 2.
PAGE 5
LAMBDA62 LoRa Transceiver Block Diagram SDI SDO SCLK nSEL S P I DIO 0-5 XTAL LNA RF Switch RF IC PA RF MATCHING CIRCUIT ANT Battery Voltage Detector RX SWITCH TX SWITCH Application Resources The LAMBDA62 is a ready to use application of the Semtech SX1262. Access to the programming and configuration of Semtech 1262 Transceiver are via the modules interface SPI line. The LAMBDA62 has been developed with Semtech to provide a low cost platform application of the 1262 transceiver.
PAGE 6
LAMBDA62 LoRa Transceiver Application schematic Interfacing a PICTM Micro Controller ANT NSEL GND SDI +3.3V SDO RX_Switch SCLK TX_Switch RESET BUSY N/C DIO1 N/C DIO2 DIO3 The above schematic shows an easy interface to a PIC Microcontroller This is the same application circuit that we used for range testing (please see our range test information later in the document). We also have application source code available for download on our website.
PAGE 7
LAMBDA62 LoRa Transceiver Electrical Specifications Absolute Maximums Symbol Parameter Minimum Maximum Unit Vdd Positive power supply -0.3 +3.9 V Vin Voltage on Digital Inputs -0.3 Vdd+0.3 V Vin Voltage on Analogue Inputs -0.3 Vdd+0.3 V RX Max Rx input power +10 dBm Top Operating temperature -40 +85 ˚C Tst Storage temperature -55 115 ˚C Recommended Operating Conditions Symbol Parameter Minimum Maximum Unit Vdd Top Positive power supply Working temperature 1.8 -40 3.
PAGE 8
LAMBDA62 LoRa Transceiver Power Consumption in Transmit mode Symbol IDDTX Frequency Band Conditions Power Output Typical Unit 868/918MHz +22dBm +20dBm +17dBm +14dBm Optimal Settings for low current and output power. Please see SX1262 PA optimal settings in Datasheet.
PAGE 9
LAMBDA62 LoRa Transceiver General Specifications Symbol Description Conditions Min FR Synthesizer Frequency Range SX1261** 150 FSTEP Synthesizer Frequency Step Typ Max Unit 960 MHz 0.
PAGE 10
Page 10 DC-DC regulator circuit No Fit Module Schematic See 5.1.3 of the SX1262 Datasheet Figure 5-3 for further details.
PAGE 11
LAMBDA62 LoRa Transceiver Range Test Notes Transmitter and Receiver boards were built using simple Vero board and a PIC microcontroller (16F886). The transmitter sent a beacon signal at 1 second intervals. The receiver acknowledges this signal back to the transmitter. A simple piece of wire was used as antenna for both transmitter and receiver. This test was designed to represent a real life application. It is often difficult to design an application with all RF features to an optimum potential i.e.
PAGE 12
LAMBDA62 LoRa Transceiver Range Test Results (Line of Range Test Results (Non Line of Sight) This is subjective as the buildings were random! Page 12 DS-LAMBDA62-6
PAGE 13
LAMBDA62 LoRa Transceiver LAMBDA62 Types and Device Marking The LAMBDA62 RF module is available at 868 and 915MHz in the following types LAMBDA module is CE Compliant and at the time of writing is being submitted for modular FCC part 15 certification Note: 868MHz : Open module with antenna connection via pin 1 of the module. This provides the lowest cost whilst achieving CE Compliance 915MHz: With Screen Can fitted and antenna connection via ufl . This is in order to achieve Fcc Certification.
PAGE 14
LAMBDA62 LoRa Transceiver Module Re-flow Guide LAMBDA62 is a 4 layer PCB, re-flow is based on IPC/JEDEC JSTD020C July 2004 Profile feature Value (lead free) Ramp up rate 3oC /s Pre-heat Temperature - Temperature Min (TSmin) - Temperature Max (Tsmax) - Pre-heat time 1500C 2000C 60-100s Peak Temperature (TP) 2400C Time at TP 10-20sec Ramp down rate 60C/s Time from 250C to peak 8 mins max.
PAGE 15
LAMBDA62 LoRa Transceiver Simplified Declaration of Conformity (RED) BG - С настоящото RF Solutions Limited декларира, че този тип радиосъоръжение дефинирани в този документ е в съответствие с Директива 2014/53/ЕС. Цялостният текст на ЕС декларацията за съответствие може да се намери на следния интернет адрес: www.rfsolutions.co.uk CS -Tímto RF Solutions Limited prohlašuje, že typ rádiového zařízení definované v tomto dokumentu je v souladu se směrnicí 2014/53/EU.