LR9131R Leadtek SiRF Star IV GPS module SiRF IV GPS engine board

Features:SiRF StarIV ultra low power chipset
Compact module size for easy integration : 15 x 14 x 2.8 mm
UART/ I2C pins reserved for customizing special user applications
Fully utilized SS4 upgrade features

IntroductionThe LR9131R GPS module is a high sensitivity, low power, Surface Mount Device (SMD) that fully utilized SiRFstarIV upgrade features. This 48-channel global positioning system (GPS) receiver is designed for a wide range of OEM applications and is based on the GPS signal search capabilities of the SiRFstarIV GSD4e ROM chipset, SiRF’s newest chipset technology. The LR9131R provides flexible bus interfaces (Optional: UART , I2C or SPI reserved for customizing special user applications).

The LR9131R is designed to allow quick and easy integration into GPS-related applications such as:

-Mobile gaming
-Cellular handsets
-Cameras
-Asset tracking
-Other location-aware consumer devices Premium on-chip software provides a new level of continuous location awareness by employing.
-Opportunistic ephemeris decode and advanced power management, which enable the GPS receiver to stay in a hot-start condition nearly continuously while consuming very little power
-Full support for client-based and server-based SiRFInstantFix Dynamic contextual awareness, temperature monitoring, and MEMS sensors that work in concert to conserve power and boost performance
-Use of software control modules to achieve power saving state  

Features 
Performance

-Highest performance Solution :
-Highest performance navigation engine (PVT) tracks as low as -163dBm
-48 track verification channels
-SBAS (WAAS or EGNOS
-Active Jammer Remover
-Removes in-band jammers up to 80 dB-Hz
-Tracks up to 8 CW jammers
-Multimode A-GPS (Autonomous, MS-Based, and MS-Assisted) -Need operator support
-SiRFGeoRecovTM Reverse EE makes positioning process being done under power saving mode.
-Reacquisition Time: 0.1 second
-RF Metal Shield for best performance in noisy environments
 
Hardware Software 
-Based on the high performance features of the SiRF Star IV low power single chipset.
-Adaptive Micropower Controller
-Only 50 to 500μA maintains hot start capability
-<10mW required for TricklePower? modeRoHS compliant (lead-free)
-SMT pads allow for fully automatic assembly processes equipment and reflow soldering
-Advanced Navigation Features
-Smart sensor I2C interface
-Interrupt input for context change detection
 
Advantages  
-Built-in LNA.
-Built-in internal ROM and based on Firmware 4.1.X
-It can remove in-band jammer up to 80db-Hz and track up to 8CW jammers, so the module can prevent GPS signal interference when design-in the electrical device with noisy electrical signal interferences such as Laptop, mobile phone, DSC, etc.
-Maintain tracking sensitivity as low as -163dBm, even without network assistance.
-(SiRF StarIII has only -159dBm sensitivity)
-Support SiRFaware technology :
-Support adaptive "Micro Power Controller" power management mode.
-Only 8mW Trickle Power, so user can leave power on all day instead of power off
-Suitable for battery drive devices that need lower power consumption application
-Ideal for high volume mass production(Taping reel package)
-Cost saving through elimination of RF and board to board digital connectors
-Flexible and cost effective hardware design for different application needs