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RAK2287 WisLink LPWAN Concentrator Datasheet
RAK2287 is an LPWAN Concentrator Module with mini-PCIe form factor based on Semtech SX1302, which enables an easy integration into an existing router or ...
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Documentation Center RAK2287 WisLink LPWAN Concentrator Datasheet Overview Description RAK2287 is an LPWAN Concentrator Module with mini-PCIe form factor based on Semtech SX1302, which enables an easy integration into an existing router or other network equipment with LPWAN Gateway capabilities. It can be used in any embedded platform offering a free mini-PCIe slot with SPI connection. Furthermore, ZOEM8Q GPS chip is integrated on board. This module is an exceptional, complete and cost efficient gateway solution offering up to 10 programmable parallel demodulation paths, an 8 x 8 channel LoRa packet detectors, 8 x SF5-SF12 LoRa demodulators and 8 x SF5-SF10 LoRa demodulators. It is capable of detecting uninterrupted combination of packets at 8 different spreading factors and 10 channels with continuous demodulation of up to 16 packets. This product is best for smart metering fixed networks and Internet-of-Things (IoT) applications, that can cover of up to 500 nodes per km� in an environment of moderate interference. Features Designed based on Mini PCL-e form factor with Heat Sink. SX1302 base band processor emulates 8 x8 channel LoRa packet detectors, 8 x SF5-SF12 LoRa demodulators, 8 x SF5-SF10 LoRa demodulators, one 125 /250 / 500 kHz high-speed LoRa demodulator and one (G)FSK demodulator. 3.3v Mini PCI-e, compatible with 3G/LTE card of Mini PCI-e type. Compatible with 3G/LTE card of Mini PCI-e type. Tx power up to 27dBm, Rx sensitivity down to -139dBm@SF12, BW 125 kHz. Supports global license-free frequency band (EU868,CN470, US915, AS923, AU915, KR920 and IN865). Supports optional SPI interfaces. Built-in ZOE-M8Q GPS module Specifications Overview The overview shows the top and back view of the RAK2287 board. It also presents the block diagram that discusses how the board works. Board Overview RAK2287 is a compact LPWAN Gateway Module, making it suitable for integration in systems where mass and size constraints are essential. It has been designed with the PCI Express Mini Card form factor in mind, so it can easily become a part of products that comply with the standard, where they allow for cards with thickness of at least 10.5 mm. The board has two UFL interfaces for the LoRa and GNSS antennas and a standard 52 pin connector (mPCIe). Documentation Center Figure 1: RAK2287 Board Overview Block Diagram RAK2287 card is equipped with one SX1302 chip and two SX1250. The first chip is utilized for RF signal and the core of the device. While the latter, provides the related LoRa modem and processing functionalities. Additional signal conditioning circuitry is implemented for PCI Express Mini Card compliance, and one UFL connectors are available for external antennas integration. Figure 2: RAK2287 Block Diagram Hardware The hardware is categorized into seven parts. It discusses the interfacing, pinouts and its corresponding functions and diagrams. It also covers the parameters and standard values of the board. Interface Power Supply RAK2287 card must be supplied through the 3.3Vaux pins by a DC power supply. The voltage needs to be stable since the current drawn can vary significantly during operation based on the power consumption profile of the SX1302 chip (see SX1302 Datasheet ) SPI Interface Documentation Center SPI interface mainly provides for the Host_SCK, Host_MISO, Host_MOSI, Host_CSN pins of the system connector. The SPI interface gives access to the configuration register of SX1302 via a synchronous full-duplex protocol. Only the slave side is implemented. UART and I2C Interface RAK2287 integrates ZOE-M8Q GPS module which has UART and I2C interface. The PINs on golden finger provide an UART connection and an I2C connection, which allows direct access to the GPS module. The PPS signal is not only connected to SX1302 internally, but also connected to golden finger which can be used by host board. GPS_PPS RAK2287 card includes the GPS_PPS input for received packets time-stamped. RESET RAK2287 card includes the RESET active-high input signal to reset the radio operations as specified by the SX1302 Specification. Antenna RF Interface The modules have one RF interfaces over a standard UFL connectors (Hirose U. FL-R-SMT) with a characteristic impedance of 50. The RF port (J1) supports both Tx and Rx, providing the antenna interface. Pin Definition Pinout Diagram Documentation Center Pinout Description Type IO DI DO OC OD PI PO NC Figure 3: RAK2287 Pinout Diagram Description Bidirectional Digital input Digital output Open collector Open drain Power input Power output No Connection Documentation Center Pin Mini PCIEx No. Pin Rev. 2.0 1 WAKE# RAK2287 Pin NC 2 3.3Vaux 3V3 3 COEX1 4 GND 5 COEX2 NC GND NC 6 1.5V GPIO(6) 7 CLKREQ# NC 8 UIM_PWR 9 GND 10 UIM_DATA NC GND NC 11 REFCLK- NC 12 UIM_CLK NC 13 REFCLK+ MCU_NRESET 14 UIM_RESET NC 15 GND GND 16 UIM_VPP NC 17 RESERVED NC 18 GND GND 19 RESERVED PPS 20 W_DISABLE# NC Type Description Remarks No Connection 3.3V DC PI supply No Connection Ground No Connection IO No Connection No Connection Connect to SX1302's GPIO[6]. Ground No Connection No Connection No Connection No Reserved for future DI Connection by applications default No Connection Ground No Connection No Connection Ground Time pulse DO output No Connection Leave open if not used. Documentation Center Pin Mini PCIEx No. Pin Rev. 2.0 21 GND 22 PERST# 23 PERn0 24 3.3Vaux 25 PERp0 26 GND 27 GND 28 1.5V 29 GND 30 SMB_CLK 31 PETn0 32 SMB_DATA 33 PETp0 34 GND 35 GND 36 USB_D- 37 GND RAK2287 Pin Type Description Remarks GND SX1302_RESET DI RESET_GPS DI 3V3 PI STANDBY_GPS DI GND GND NC GND I2C_SCL IO PI_UART_TX DI I2C_SDA IO PI_UART_RX DO GND GND USB_DM IO GND Ground RAK2287 reset input GPS module ZOE-M8Q reset inputs 3.3V DC supply GPS module ZOE-M8Q external interrupt input Ground Active high, 100ns for SX1302 reset. Active low, Leave open if not used. Active low, Leave open if not used. Ground No Connection Ground HOST SCL HOST UART_TX HOST SDA HOST UART_RX Ground Connect to GPS module ZOE-M8Q's SCL internally. Leave open if not used. Connect to GPS module ZOE-M8Q's UART_RX internally. Leave open if not used. Connect to GPS module ZOE-M8Q's SDA internally. Leave open if not used. Connect to GPS module ZOE-M8Q's UART_TX internally. Leave open if not used. Ground USB differential data (-) Ground Require differential impedance of 90. Documentation Center Pin Mini PCIEx No. Pin Rev. 2.0 RAK2287 Pin 38 USB_D+ USB_DP 39 3.3Vaux 40 GND 41 3.3Vaux 3V3 GND 3V3 42 LED_WWAN# NC 43 GND GND 44 LED_WLAN# NC 45 RESERVED HOST_SCK 46 LED_WPAN# NC 47 RESERVED HOST _MISO 48 1.5V NC 49 RESERVED HOST _MOSI 50 GND GND Type Description Remarks USB IO differential data (+) 3.3V DC PI supply Require differential impedance of 90. Ground 3.3V DC PI supply No Connection Ground No Connection I/O Host SPI CLK No Connection Host SPI I/O MISO No Connection Host SPI I/O MOSI Ground 51 RESERVED HOST _CSN I/O Host SPI CS 52 3.3Vaux 3V3 3.3V DC PI supply RF Characteristics Operating Frequencies The board supports the following LoRaWAN frequency channels, allowing easy configuration while building the firmware from the source code. Documentation Center Region Frequency ( MHz ) Europe EU868 North America US915 Asia AS923 Australia AU915 Korea KR920 Indian IN865 China CN470 RF Characteristics The following table gives typically sensitivity level of the RAK2287 card. Signal Bandwidth / [KHz] Spreading Factor Sensitivity / [dBm] 125 12 -139 125 7 -125 250 7 -123 500 12 -134 500 7 -120 Electrical Requirements Stressing the device above one or more of the ratings listed in the Absolute Maximum Rating section may cause permanent damage. These are stress ratings only. Operating the module at these or at any conditions other than those specified in the Operating Conditions sections of the specification should be avoided. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. The operating condition range define those limit within which the functionality of the device is guaranteed.Where application information is given, it is advisory only and does not form part of the specification. Absolute Maximum Rating Limiting values given below are in accordance with the Absolute Maximum Rating System (IEC 134). Documentation Center Symbol 3.3Vaux USB RESET SPI Description Module supply voltage USB D+/D- pins RAK2287 reset input SPI interface Condition Input DC voltage at 3.3Vaux pins Input DC voltage at USB interface pins Input DC voltage at RESET input pin Input DC voltage at SPI interface pin Min. Max. -0.3V 3.6V 3.6V -0.3V 3.6V -0.3V 3.6V GPS_PPS GPS 1 pps input Input DC voltage at GPS_PPS input pin -0.3V 3.6V Rho_ANT Tstg Antenna ruggedness Storage Temperature Output RF load mismatch ruggedness at ANT1 10:1 VSWR -40�C 85�C WARNING The product is not protected against overvoltage or reversed voltages. If necessary, voltage spikes exceeding the power supply voltage specification, given in table above, must be limited to values within the specified boundaries by using appropriate protection devices. Maximum ESD The table below lists the maximum ESD. Parameter Min Typical Max Remarks ESD_HBM 1000V Charged Device Model JESD22-C101 CLASS III ESD_CDM 1000V Charged Device Model JESD22-C101 CLASS III NOTE Although this module is designed to be as robust as possible, electrostatic discharge (ESD) can damage this module. This module must be protected at all times from ESD when handling or transporting. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD handling precautions should be used at all times. Power Consumption Documentation Center Mode Condition Min. Typical Max. ActiveMode(TX) The power of TX channel is 27dBm and 3.3V supply. 511 512 513 mA mA mA Active-Mode(RX ) TX disabled and RX enabled. 81.6 101 70 mA mA mA Power Supply Range The table below lists the power supply range. Input voltage at 3.3Vaux must be above the normal operating range minimum limit to switch-on the module. Symbol Parameter Min. Typical Max. 3.3Vaux Module supply operating input voltage14 3 V 3.3 V 3.6 V Mechanical Characteristics The board weighs 16.3 gram, it is 30 mm wide and 50.96 mm tall. The dimensions of the module fall completely within the PCI Express Mini Card Electromechanical Specification, with except of the card's thickness (10.5 mm at its thickest). Figure 4: RAK2287 Board Dimensions Environmental Requirements Operating Conditions The table below lists the operation temperature range Parameter Normal operating temperature Min. Typical Max. Remarks -40�C +25�C +85�C Normal operating temperature range (fully functional and meet 3GPP specifications) Documentation Center NOTE Unless otherwise indicated, all operating condition specifications are at an ambient temperature of 25�C. Operation beyond the operating conditions is not recommended and extended exposure beyond them may affect device reliability. Schematic Diagram RAK2287 card refers to Semtech's reference design of SX1302. The SPI interface can be used on PCIE connector.The next figure shows the minimum application schematic of RAK2287 card. You should use it at least 3.3V/1A DC power, connect SPI interface interface to the main processor. Figure 5: Schematic Diagram of RAK2287 Software Download the latest firmware of the RAK2287 WisLink-LoRa in the table provided below. Firmware Model Raspberry Pi Board Firmware Version Source RAK2287 Raspberry Pi 3B+, 4 V4.2.5_20200909 Download Models / Bundles Order Information In general, the RAK2287's variation is the defined as RAK2287 - XY, where X is the model variant and Y is the supported region. Take a look at the tables below to know the variants and its individual specification. Documentation Center Parameter Variations X - Model Variant S; M; A; C Y - Supported Region 3 - EU868; 4 - US915; 5 - KR920; 6 - AS923; 7 - IN865; 8 - AU915 The table below shows the board order configurations of the RAK2287 WisLink LPWAN Concentrator. Model RAK2287SY RAK2287MY RAK2287AY RAK2287CY SX1302 on board STM32L412Kx on board GPS module on board SPI Interface USB Interface Certification Last Updated: 7/28/2021, 5:13:12 AM