General Description

The SkyNav GM11 is a 12 channel continuous tracking GPS receiver optimized for high sensitivity and low cost applications. The GPS signal is applied to the antenna input of the module, and a complete serial data message with position, velocity and time information is presented at the serial interface.

The GM11 contains a low noise amplifier for passive antenna operation, RF down converter, baseband processor, flash memory and navigation software. The module provides excellent navigation performance under static or dynamic conditions in areas with limited sky view like urban canyons, fast TTFF for weak signal operation. Power saving mode make this product suitable for handheld and battery-operated devices.

Features

Ultra high sensitivity: -154dBm
Extremely fast TTFF (Time To First Fix) at low signal level
Low power consumption: Max 40mA@3.0V
NMEA-0183 compliant protocol or custom protocol
Operating voltage: 2.85V to 3.3V
Operating temperature range: -40 to 85℃
SMD type with stamp holes
Small form factor: 27.9x20.0x3.0mm
RoHS compliant (Lead-free)

Performance Specification

Parameter	Specification
Receiver Type	L1 frequency band, C/A code, 12-channels
Sensitivity	Tracking Acquisition	-154dBm -140dBm
Accuracy	Position Velocity Timing (PPS)	10m 2D RMS without SA 0.1m/s without SA 60ns RMS
Acquisition Time	Cold Start Warm Start Hot Start Re-Acquisition	38s 33s 4s <1s
Power Consumption	Tracking Acquisition Stand-by	35mA @3V Vcc 40mA 5mA
Navigation Data Update Rate	1Hz
Operational Limits	Altitude Velocity Acceleration	Max 18,000m Max 515m/s Less than 4g

Applications

LBS (Location Based Service)
PND (Portable Navigation Device)
Vehicle navigation system
Mobile phone