LR9130(SiRF STAR 4E/Flash)

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The Leadtek LR9130 GPS module is a high sensitivity, low power, Surface Mount Device (SMD). 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™ single chipset, SiRF's newest chipset technology.



  • Based on the high performance features of the SiRFstarlV single chip
  • Compact module size for easy integration:
    24x20x2.9 mm with build-in LNA.
  • Fully automatic assembly: reflow solder assembly ready
  • Hardware compatible with SIRF GSW4 software
  • Embedded CGEE that can capture ephemeris data from Satellites locally and predicts ephemeris out to 3 days
  • RoHS compliant
  • RF Metal Shield for best performance In noisy environments
  • Support MEMS sensors through IC interface
  • UART/IC/SPI for GPS communications interface
  • Protocol: NMEA-0183/SiRF Binary (default NMEA)
  • Baud Rate: 4800, 9600, 19200, 38400 or 57600 bps (default 4800)
  • Support SiRFaware technoiGgy and ‘Micro PowerrController” power management mode
  • Suitable for battery drive device applications that needs lower power consumption

Feature Content Description
Chipset GSD4e SiRFstarIV low power single chipset
General Frequency L1, 1575.42 MHz
C/A code 1.023 MHz chip rate
Channels 48
Sensitivity -163dB
Accuracy Position
< 2.5 meters  
0.01 meters/second
Time 1 microsecond synchronized to GPS time
Datum Default WGS-84
Other selectable for other Datum
Time to First Fix
(TTFF -122dBm)
(Open Sky &
Stationary Requirements)
Reacquisition 0.1 sec., average
Snap start 1 sec., average
Hot start 1 ~ 2 sec.
Warm start 9 ~ 15 sec.
Cold start 25 ~ 35 sec.
Altitude 18,000 meters (60,000 feet) max.
Velocity 515 meters/second (1000 knots) max.
Acceleration 4g, max.
Jerk 20 meters/second3, max.
Power Main power input 2.8 ~ 5.0 VDC input
Power Consumption 50mA (Tracking Mode)
Backup Power 2.8 ~ 5.0 VDC battery input
Serial Port Electrical interface
Protocol messages
Default UART:NMEA-0183@4800bps
Physical Characteristics Dimension 24x20x2.9mm
Environmental Characteristics Operating temperature range -40 °C to +85 °C

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