LR9334 Leadtek SiRF Star IV GPS antenna module SiRF IV GPS engine board

Features:- SiRF StarIV internal ROM-based ultra low power chipset
- Compact module size for easy integration : 22 x 18 x 7 mm
- LR9334 smart antenna module
- Operating at 1.8V signal level

The LR9334 is a high sensitivity, low power and very compact smart antenna module,with built in GPS receiver. This 48-channel global positioning system (GPS) receiver is designed for a wide range of OEM applications then based on the fast and deep GPS signal search capabilities of SiRFstarIV GSD4e ROM chipset, SiRF's newest chipset technology. The LR9334 provides flexible I/O interfaces (UART). LR9334 is designed to allow quick and easy integration into GPS-related applications such as:
- PDA, MID, and other portable devices
- Car and Marine Navigation
- Fleet Management / Asset Tracking
- AVL and Location-Based Services
- Hand-Held Device for Personal Positioning and Navigation
- Use of software control modules to achieve power saving state

SiRF IV GPS Module Features

Performance

- High Performance Solution:
  - High sensitivity navigation engine (PVT) tracks as low as -160dBm
  - 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) -With operator support
- *2 Embedded CGEE / SGEE (With back-end server support) speed up TTFF a lot and makes cold start time to be around 20+ seconds
- SiRFGeoRecovTM Reverse EE makes positioning process being done under power saving mode.
- RF Metal Shield for best performance in noisy environments

Interface

- Multiple host interfaces (UART)
- Secondary I2C port for MEMS connection
- Protocol: NMEA-0183 (default)

 

Advantages

- Built-in LNA.
- Built-in internal ROM and based on Firmware 4.x.x
- *3 Embed CGEE (Client Generated Extended Ephemeris) that can capture ephemeris data from satellites locally and predicts ephemeris out to 3 days. So if the module was off within 3 days, it could complete positioning process with limited time just like hot start.
- 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.
- Tracking sensitivity as low as -160dBm, even without network assistance.
- Support SiRF Aware technology
  - Support adaptive “Micro Power Controller” power management mode
  - *4 Support MEMS sensor through I2C interface. (V4.X.X firmware is available for now)
  - MEMS interrupt can improve Micro Power Mode performance.
  - 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
- Cost saving through elimination of RF and board to board digital connectors
- Flexible and cost effective hardware design for different application needs