LEA-5H, LEA-5S, LEA-5A U-blox 5 GPS And GALILEO Modules

u-blox AGZürcherstrasse 688800 ThalwilSwitzerlandwww.u-blox.comPhone 41 44 722 7444Fax 41 44 722 7447info@u-blox.comLEA-5H, LEA-5S, LEA-5Au-blox 5 GPS and GALILEO ModulesAbstractTechnical data sheet describing the cost effective, high-performanceu-blox 5 based LEA 5 series of GPS/GALILEO modules.Features include A-GPS support, low power consumption, -160 dBm highsensitivity and an innovative jamming-resistant RF architecture. Thecompact 17.0 x 22.4 mm form factor of the highly successful LEA-4 seriesis maintained, enabling easy migration. The LEA 5 series supports passiveand active antennas.your position is our focusData SheetData Sheet

your position is our focusTitleLEA-5H, LEA-5S, LEA-5ASubtitleu-blox 5 GPS and GALILEO ModulesDoc TypeData SheetDoc IdGPS.G5-MS5-07026-P4RevisionIndexDateNameStatus / /10/2007TGUpdate of TablesP47/01/2008TGUpdate of Pin DiagramPreliminaryThis document and the use of any information contained therein, is subject to the acceptance of the u-bloxterms and conditions. They can be downloaded from www.u-blox.com. u-blox makes no warranties based onthe accuracy or completeness of the contents of this document and reserves the right to make changes tospecifications and product descriptions at any time without notice.u-blox reserves all rights to this document and the information contained herein. Reproduction, use ordisclosure to third parties without express permission is strictly prohibited. Copyright 2007, u-blox AG.For most recent documents, please visit www.u-blox.comData SheetRevisionsIdentification of applicable hardware-All data codesCommentsProducts marked with this lead-free symbol on the product label comply with the"Directive 2002/95/EC of the European Parliament and the Council on the Restriction ofUse of certain Hazardous Substances in Electrical and Electronic Equipment" (RoHS).This is an Electrostatic Sensitive Device (ESD).Observe precautions for handling.LEA-5H, LEA-5S, LEA-5A - Data SheetGPS.G5-MS5-07026-P4Preliminaryu-blox proprietaryPage 2

your position is our focus1 Functional Description1.1 OverviewThe LEA-5 module series by u-blox sets a new standard for GPS and GALILEO receiver modules. Powered by thehigh performance 50-channel u-blox 5 technology, these modules provide excellent performance and flexibilityat an economical price. A 32-channel acquisition engine with over 1 million effective correlators is capable ofmassive parallel searches. This enables a Time To First Fix (TTFF) of less than 1 second, while longcorrelation/dwell times make possible an acquisition and tracking sensitivity of -160dBm. An availablefunctionality is KickStart, a new feature enabling accelerated acquisition of weak signals. Once acquired,satellites are passed on to a power-optimized dedicated tracking engine. This arrangement allows the GPS andGALILEO engine to simultaneously track up to 16 satellites while searching for new ones. u-blox 5’s advancedjamming suppression mechanism and innovative RF architecture provide a high level of immunity to jamming,ensuring maximum GPS and GALILEO performance.The LEA-5 series maintains the compact 17.0 x 22.4 mm form factor of the highly successful LEA-4 modules. Themodules have been designed with backwards compatibility in mind, enabling ease of upgrade and reducingengineering and design costs. A USB port is available for faster data transmission and more flexibility. Theoptional FLASH EPROM provides capacity to store user-specific configuration settings and allows for futureupdates. These modules do not support the antenna supply and supervisor functionalities, and are ideal solutionsfor applications where extra cost savings are needed.LEA-5 modules are not designed for life saving or supporting devices or for aviation and should not be used inproducts that could in any way negatively impact the security or health of the user or third parties or that couldcause damage to goods.1.2 Highlights and FeaturesHighlights Time To First Fix (TTFF): 1 secAcquisition and tracking sensitivity: -160dBmReceives GPS and GALILEO signalsA-GPS: Supports u-blox AssistNow Online and Offline, OMA SUPL compliantHigh immunity to jammingUART serial port, USB, DDC (I2C compatible)1111LEA-5A2.7-3.6 6 3.0Reset InputCFG PinPrecision TimingRaw DataDead ReckoningAssistNowOnlineAssistNowOffline2.7-3.6 3.0LEA-5SDDCUSBLEA-5HSPIUARTFW Update/ FLASHSuperSenseKickStart50-channelengineThickness (mm)Voltage Range (V)FeaturesTable 1: Features of the LEA-5 SeriesLEA-5H, LEA-5S, LEA-5A - Data SheetGPS.G5-MS5-07026-P4Preliminaryu-blox proprietaryPage 3

your position is our focus1.3 Block DiagramSPIRF INBaseband ProcessorSAWFilterV ANTAADET NAntennaSupervision(optional)RF Front-EndwithIntegrated LNATCXO or XTALVCC RFDigitalIF FilterGPS/GALILEOEngineSRAMROM CodePowerManagementBackupRAMARM7 CPURTCRESET NCFG COM1UARTEXTINTTIMEPULSEDDCPower ControlVCC OUTUSB V2.0VDDIOVCCV BACKUPFLASH EPROM(optional)G NDRTCFigure 1: Hardware Block Schematic1.4 Assisted GPS (A-GPS)Supply of aiding information like ephemeris, almanac, rough last position and time and satellite status and anoptional time synchronization signal will reduce time to first fix significantly and improve the acquisitionsensitivity. All LEA-5 modules support the u-blox AssistNow Online and AssistNow Offline A-GPS services and areOMA SUPL compliant.1.5 KickStartA new feature available with u-blox 5 receiver modules is KickStart. This functionality uses a TCXO to accelerateweak signal acquisition, enabling faster start and reacquisition times. KickStart is available with the LEA-5H andLEA-5S.1.6 GALILEOThe u-blox 5 is a GNSS chip that receives and tracks GPS and GALILEO signals simultaneously, enhancingaccuracy and coverage. When GALILEO-L1 signals become available, u-blox 5 receivers equipped with FLASHmemory will be capable of receiving and processing them via a simple upgrade. The ability to receive and trackGALILEO satellite signals will result in higher coverage, improved reliability and better accuracy.1.7 ProtocolsProtocolTypeNMEAUBXInput/output, ASCII, 0183, 2.3 (compatible to 3.0)Input/output, binary, u-blox proprietaryTable 2: Available ProtocolsBoth protocols are available on UART, USB, DDC and SPI. For specification of the various protocols see theu-blox 5 Protocol Specification [2].LEA-5H, LEA-5S, LEA-5A - Data SheetGPS.G5-MS5-07026-P4Preliminaryu-blox proprietaryPage 4

your position is our focus1.8 AntennaLEA-5 modules are designed for use with passive and active antennas.An optional antenna supervisor is available with the LEA-5H, LEA-5S and LEA-5A. In the default operation modethe antenna supervisor is activated and enables the receiver to detect short circuits to the active antenna bychecking the bias voltage level and can shut down the voltage bias immediately. A series resistor is needed infront of the V ANT input. UBX and NMEA messages are provided to report the condition of the antenna supply.Open circuit detection can also be supported with an additional external circuit. For details, please refer to theLEA-5 Hardware Integration Manual [1].ParameterSpecificationAntenna TypeActive AntennaRecommendationsPassive and active antennaMinimum gain15 - 20 dB (to compensate signal loss in RF cable)Maximum noise figure1.5 dBMaximum gain30 dBTable 3: Antenna Specifications for all LEA-5 ModulesParameterSpecificationAntenna SupplyAntenna SupervisorUsing VCC RF or external voltage sourceShort circuit detectionBuilt-inOpen circuit detectionEnabled with external circuitTable 4: Antenna Supervisor Specifications for LEA-5H, LEA-5S and LEA-5ALEA-5H, LEA-5S, LEA-5A - Data SheetGPS.G5-MS5-07026-P4Preliminaryu-blox proprietaryPage 5

your position is our focus1.9 Configuration1.9.1 Boot-Time CFG COM1 Configuration (LEA-5S, LEA-5A)The LEA-5S and LEA-5A provide a CFG COM1 pin for boot-time configuration. It becomes effectiveimmediately after start-up. Once the module has started, the configuration settings may be modified with UBXconfiguration messages. The Baudrate can be changed using the CFG-PRT message and the messages can bechanged using CFG-MSG. The modified settings remain effective until power-down or reset. If these settingshave been stored in battery-backup RAM, then the modified configuration will be retained, as long as thebackup battery supply is not interrupted.CFG COM1Messages0Baudrate(Kbaud)4.8GSV 1, RMC, GSA, GGA, VTG, TXT19.6GSV, RMC, GSA, GGA, GLL, VTG, TXTTable 5: Supported CFG COM1 settings (default settings in bold text)1.9.2 Configuration (LEA-5H)With the LEA-5H, configuration settings modified with UBX configuration messages can be saved to the FLASHmemory. In this case the modified settings remain effective even after power-down and don’t require backupbattery supply.For more information see the LEA-5 Hardware Integration Manual [1].1every fifth fixLEA-5H, LEA-5S, LEA-5A - Data SheetGPS.G5-MS5-07026-P4Preliminaryu-blox proprietaryPage 6

your position is our focus2 GPS PerformanceParameterSpecificationReceiver TypeTime-To-First-Fix 2SensitivityHorizontal Position Accuracy 4Accuracy of Timepulse SignalMax Navigation Update RateDynamicsOperational LimitsCold Start (Autonomous)Warm Start (Autonomous)Hot Start (Autonomous)Aided Starts 3Tracking & NavigationAcquisitionCold Start (Autonomous)AutonomousSBASRMS50 ChannelsGPS L1 frequency, C/A CodeGALILEO Open Service L1 frequency29 s29 s 1 s 1 s-160 dBm-160 dBm-145 dBm 2.5 m 2.0 m50 ns4 Hz 4g515 m/s (1000 knots)VelocityTable 6: LEA-5 GPS Performance234All satellites at –130 dBDependent on aiding data connection speed and latencyCEP, 50%, 24 hours static, -130dBmLEA-5H, LEA-5S, LEA-5A - Data SheetGPS.G5-MS5-07026-P4Preliminaryu-blox proprietaryPage 7

your position is our focus3 Mechanical 22.4 0.6/-0.1mm17.0 0.1mm3.0 0.3mm2.55 0.3/-0.1mm1.1 0.1mm3.80 0.1mm1.10 0.1mm2.85 0.3/-.01mm2.1 g[882 24/-4mil][669 4mil][118 12mil][100 18/-4mil][43 4mil][150 4mil][75 4mil][112 18/-4mil]Table 7: Dimensions(H)15GNDGND16RF INGND 1317GND18VCC RF19V ANT20AADET0 NLEA-5Top View14Reserved 12V BCKP 11RESET N 10CFG COM1 9/ReservedGFA21NCVCC OUT822NCGND723NCVCC624VDDUSBNC525USB DMRxD1426USB DPTxD1327EXTINT0SCL2228TIMEPULSESDA21EDBSide ViewCFigure 2: DimensionsFor information regarding the Paste Mask and Footprint see the LEA-5 Hardware Integration Manual [1].LEA-5H, LEA-5S, LEA-5A - Data SheetGPS.G5-MS5-07026-P4Preliminaryu-blox proprietaryPage 8

your position is our focus3.1 Pin AssignmentNoModuleNameI/ODescription1AllSDA2I/ODDC Data2AllSCL2I/ODDC Clock3AllTxD1OSerial Port 14AllRxD1I(do not leave open)56AllAllNCVCCINot ConnectedSupply voltage7AllGNDIGround (digital)8AllVCC OUTOOutput voltageConfiguration PinLEA-5A, LEA-5SCFG COM1ILEA-5HReservedI1011AllAllRESET NV DIIGroundGround16AllRF INIGPS signal input1718GNDVCC RFIOGroundOutput Voltage RF section19AllAllAllV ANTIAntenna Bias voltage20AllAADET0 NI21NCNot Connected22AllAllNCNot Connected23AllNC24AllVDDUSBIUSB Supply25AllUSB DMI/OUSB Data2627AllAllUSB DPEXTINT0I/OIUSB DataExternal Interrupt Pin28AllTIMEPULSEOTime pulse (1PPS)9Backup voltage supplyActive Antenna DetectNot ConnectedTable 8: PinoutPins designated Reserved should only be used with caution. For more information about Pinouts see theLEA-5 Hardware Integration Manual [1].LEA-5H, LEA-5S, LEA-5A - Data SheetGPS.G5-MS5-07026-P4Preliminaryu-blox proprietaryPage 9