u-blox ANTARIS 4 User Manual


your position is our focus
 When migrating from an ANTARIS GPS receiver (TIM-Lx or LEA-LA), reduce R5 of the Antenna Short and
OpenSupervisorcircuitto33k(seeSection 4.3.3.2).
Serial Communication (see Section 4.3)
 Choose UBX for an efficient (binary) data handling (see Section 4.4.3) or if more data is required than
supportedbyNMEA(seeSection 4.4.4)
 WhenusingUBXprotocol,checkiftheUBXqualityflags(seeSection 4.6.9.2)areusedproperly.
 ChooseNMEAforcompatibilitytootherGPSservices,e.g.TIM-ST(seeSection 4.4.4)
 CustomizetheNMEAoutputifrequired(e.g.NMEAversion2.3or2.1,numberofdigits,outputfiltersetc.)
Schematic
 If required, does your schematic allow using different TIM-4x or LEA-4x variants? For TIM-4x modules see
Table 82 foracomparison,forLEA-4xrefertoTable 83.
 LeavetheRESET_Npinopenifnotused.Don’tdriveithigh(see Section 4.9.2)!
 LeaveBOOT_INTpinopenifnotusedforfirmwareupdate.
 ChecktheGPSMODEpinsconnectionforstart-upconfigurationofLowCostReceivers(see 4.8.2).
 Planuseof2
nd
interface(USBorserialport)forfirmwareupdatesorasaserviceconnector.

LEA-4 Design

3.2 x
ForaminimalDesignwithLEA- f
• Connect the Power supply en -powered. In case of bus-powered devices,
ecttheU pow su befo B.
aop d
conn ntoallgr
tthe na  RF nnasupply(V_ant)
veantennas(in rn e
anactivean nas b toLE
asshowninsection4.3.3.1 followthela ationsinsection3.6.6.
se the required rial  interface 
applicatio 
• IfyouneedHot-orWarmstartinyourapplica
ecidewheth TIMEPULS OT tthe
appropriatepinsonyourm
• Haveyouchosenthemodulewiththecorrec
 minimal up f a r d

designrequirementsinTable 5

4xthefollowing
 to VCC wh
unctionandpinshavetobeconsidered:
the device is self
conn SB er pplytoaLDO refeedingittoVccandVDDUS
• Assure timalgroun
anten
ectio oundpinsoftheLEAmodule
• Connec
foracti
to
te
_INovera matching
alorexternalpow
50Ohmmicrostrip anddefine theante
rsupply)
• If ten hall econnected
and
A-4M,makesureaddaninductor
fortheantennabiasvoltage
youtrecommend
• Choo se  communication  (USART or USB) and connect the appropriate pins to
your n
tion,connectaBackupBatteryto
V_BAT
MODEoptionarerequiredinyourapplicationandconnec• D er E,RESETorBO
odule
ttemperaturerange?
with LEA-4x modules. Now check about special functions anThis is a  set or PVT GPS receive
.
GPSModules-SystemIntegrationManual(SIM)(incl.ReferenceDesign) Design-In
GPS.G4-MS4-05007-A1
  Page 44

u-blox ANTARIS 4 Specifications

General

Brand	u-blox
Model	ANTARIS 4
Category	GPS
Language	English