Product information

L20

GPS module

The L20 module provides the high performance GPS engine module which is embedded the SiRFstarIV™ chip solution with SIRFaware™ technology. With 48 PRN channels, L20 acquires and tracks satellites in the shortest time even at indoor signal level. With a compact profile of 16.0mm × 12.2mm × 2.4mm, it perfectly suits for vehicle tracking, personal tracking, asset tracking, connected PND, security device and other industrial applications.

L20 supports aided-GPS function without the necessity of data download from server since it captures ephemeris data from satellites locally and predicts ephemeris out to 3 days.

Advantages

  • -163dBm tracking sensitivity
  • Highest autonomous mode acquisition sensitivity, -148dBm
  • Power saving modes
  • Self-Assisted CGEE function
  • 48 PRN channels
  • Low tracking power consumption, 41mA (passive antenna)
  • Removes in-band jammers up to 80 dB-Hz
  • Tracks up to 8 CW jammers

General Specifications

  1. Frequency bandL1 (1575.42MHz)
  2. Channels Number48 PRN channels
  3. Horizontal Position Accuracy
  4. Autonomous<2.5 m CEP SBAS<2.0 m CEP
  5. Velocity Accuracy
  6. Without aid0.01 m/s
  7. Acceleration Accuracy
  8. without aid0.1 m/s²
  9. Timing Accuracy< 100 ns
  10. Reacquisition Time< 1 s
  11. Time To First Fix
  12. Cold start< 35 s Warm start< 35 s Warm start with CGEE10 s typ. Hot start< 1 s
  13. Sensitivity
  14. Autonomous acquisition-148 dBm Hot start-160 dBm Tracking-163 dBm Navigation-160 dBm
  15. Operating Temperature-40°C to +85°C
  16. Dynamic Performance
  17. Maximum Altitude18 288 m Maximum Velocity514 m/s Acceleration4G
  18. Dimensions16.0mm×12.2mm×2.4mm
  19. WeightApprox. 1.0g

Serial Interfaces

  1. One UARTAdjustable:1200~115200 bpsDefault: 4800bps
  2. I/O Voltage2.0V ~ 3.6V
  3. ProtocolsNMEAOSP

Electrical Data

  1. Power supply2.0 to 3.6V
  2. Power Acquisition57mA (passive antenna)
  3. Power Tracking41mA (passive antenna)
  4. Power SavingTP, APM, PTF
  5. Antenna TypeActive and passive
  6. Antenna powerExternal or internal VCC_RF

Approvals

  1. CE

Adobe Reader 9 or newer version is required to view following below PDF files. This is a free program available from the Adobe web site. Follow the download directions on the Adobe web site to get your copy of Adobe Reader.

Quectel L20 Products Summary rel. 10-02-2012 (182.8 KB)
L20 GPS Protocol Ver.1.0 (772.6 KB)
L20 Hardware Design Ver.1.0 (724.6 KB)
L20 ROM1.0 to ROM1.3 Change Notis (134.6 KB)
L20 AGPS Application Note Ver.1.0 (752 KB)
L20 Evalution Board User Guide Ver.1.0 (1.3 MB)
Schematic of Evalution Board L20-EVB V1.02 (86.1 KB)

Adobe Reader 9 or newer version is required to view following below PDF files. This is a free program available from the Adobe web site. Follow the download directions on the Adobe web site to get your copy of Adobe Reader.

L20 Part&Decal rev.06-05-2011 (30.2 KB)
SiRFLive2.01 (21.3 MB)

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