LEA-4T ANTARIS® 4 Programmable GPS Module with Precision Timing

The LEA-4T, supporting precision GPS timing and raw measurement data for demanding positioning applications, provides high sensitivity, exceptionally low power consumption and USB connectivity.

The LEA-4T features a Time Mode function whereby the GPS receiver assumes a stationary 3D position, whether programmed manually or determined by an initial self-survey. Stationary operation enables GPS timing with only one visible satellite and eliminates timing errors which otherwise result from positioning errors. The accuracy of the time pulse is as good as 50 ns, synchronized to GPS or UTC time. An accuracy of 15 ns is achievable by using the quantization error information to compensate the granularity of the time pulse. The built-in 2-channel time mark and counter unit provides precise time measurement of external signals (EXTINT0 and 1).

The LEA-4T also supports raw measurement data (carrier phase with half-cycle ambiguity resolved, code phase and Doppler measurements) which can be used in external applications that offer precision positioning, real-time kinematics (RTK) and attitude sensing.

Highlights		Features
ULTRA LOW POWER CONSUMPTION STATIONARY MODE FOR GPS TIMING OPERATION 15 ns TIMING ACCURACY (ERROR COMPENSATED) 1-SATELLITE GPS TIMING 4 Hz POSITION UPDATE RATE  10 Hz RAW MEASUREMENT DATA OUTPUT FLASH EPROM: PROGRAMMABLE AND CONFIGURABLE SuperSense INDOOR GPS, -158 dBm SUPPORTS A-GPS SERVICES INCLUDING AssistNow® ONLINE 1 USB AND 1 UART PORTS		16 CHANNEL ANTARIS 4 POSITIONING ENGINE SUPPORTS DGPS, WAAS, EGNOS AND MSAS CONFIGURABLE TIME PULSE: 0.1 Hz - 1 KHz 2 CHANNEL PRECISION TIME MARK / COUNTER CONFIGURABLE I/O AND UART VOLTAGE LEVELS SUPPORTS PASSIVE AND ACTIVE ANTENNAS ANTENNA SHORT AND OPEN CIRCUIT DETECTION AND PROTECTION POWER BROWN-OUT PROTECTION: NO EXTERNAL RESET HARDWARE NEEDED OPERATING TEMPERATURE RANGE: -40 TO 85°C RoHS COMPLIANT (LEAD-FREE)

Resources and Documentation

Application Note A useful guide for customers migratiing from Antaris-4 based GPS modules to the new u-blox 5 technology.   Revision: PRELIMINARY 10 pages - 1.1 MB Product Summary LEA-4T product summary   Apr 2007 2 pages - 107.7 KB LEA-4x Datasheet Technical Data Sheet describing the economical and flexible ANTARIS®4 based series (LEA-4A, LEA-4H, LEA-4M, LEA-4P, LEA-4R, LEA-4S, LEA-4T) of GPS Modules.   Revision: 1 18 pages - 981 KB Antaris®4 GPS Module System Integration Manual SIM including reference design. Describes the features of u-blox’s ANTARIS®4 GPS modules. This manual applies to all ANTARIS®4 GPS receivers based on Firmware 5.00 and above.   Revision: A1 187 pages - 7.4 MB

Ordering Information

PART NUMBER	DESCRIPTION	REEL SIZE	RoHS
LEA-4T-0-000-1	u-blox ANTARIS® 4 Programmable GPS, 16-channel FLASH-Based GPS Module with Precision Timing	100