The GlobalTop Gmm‐u5LP is a highly sensitive, low power consuming GPS module in a popular
SMD form factor. It utilizes MediaTek GPS MT3329 solution that supports up to 66 channels of
satellite searching with ‐165dBm sensitivity and 10Hz maximum update rate for precise GPS signal processing under low receptive, high velocity conditions.

Gmm‐u5LP comes with the addition of a power saving switching mode power supply (SMPS) that can help reduce the overall amount of GPS power consumption by over 30% when compared to the previous generation.

Gmm‐u5LP also features a new antenna system called "Antenna Advisor" that helps with the
detections and notifications of different antenna statuses, including active antenna connection,
antenna open circuit and antenna shortage. It also features antenna shortage protection to safeguard the module from being damaged due to short circuiting at antenna I/O. "Antenna Advisor" is very easy to implement and requires only a single additional resistor.

The major advancement in power saving, plus hassle‐free antenna I/O detection and protection, coupled with flexible GPS firmware customization, makes this GPS module in a popular SMD form factor an ideal solution for the next generation of mobile and embedded devices.

suitable applications

• AVL
• Personal Tracker
• Bike Computer
• Mobile Phone
• PND
• M2M
• Precise Timing Equipment
• hardware upgrade for LEA-4A, LEA-4S, LEA-5A

features

• Super Low Power Consumption with SMPS Power Saving Management:
  • Acquisition: 30mA Typical
  • Tracking: 24mA Typical
• "Antenna Advisor" ‐ Active and Passive Antenna support with the following features and only a single additional resistor is required:
  • Active and Passive Antenna Detection & Notification
  • Open Circuit Detection & Notification
  • Short Circuit Protection & Notification
• Ultra‐High Sensitivity: ‐165dBm
• L1 Frequency, C/A code, 66‐Channels Satellite Searching
• High Update Rate: up to 10Hz
• DGPS (WAAS/EGNOS/MSAS/GAGAN) Support
• AGPS Support for Fast TTFF
• Magnetic Variation Support (Configurable by Customized Firmware)
• 1‐PPS Support for Timing Applications
• Multi‐Path Detection and Compensation
• E‐GSM‐900 Band Rejection
• USB Interface support (Desktop Windows and Linux Platform)
• Dimension: 22.4mm x 17mm x 2.2 mm
• E911, RoHS, REACH compliant

references

• manufacturer name: GlobalTop Technology, Inc.
• manufacturer's part name(s): Gmm-u5LP
• manufacturer's part code(s): Gmm-u5LP
• documentation archive