Product description
The MT3118N/A is a GPS receiver SoC that combines advanced multi-constellation satellite tracking with low power consumption and high accuracy. Its ability to support GPS, GLONASS, and QZSS ensures that it can provide reliable positioning in a wide range of environments, including urban areas, rural locations, and indoors, where GPS signals may be weak or obstructed.
Multi-Constellation Support:
By supporting multiple satellite systems, including GPS, GLONASS, and QZSS, the MT3118N/A improves the accuracy and reliability of satellite tracking. This is especially beneficial in areas where GPS signals are limited or blocked, such as cities with tall buildings or rural areas with less satellite visibility. The additional satellite constellations increase the number of available satellites, which enhances the overall positioning performance.
High Sensitivity:
The MT3118N/A is designed to track weak signals with its high sensitivity of -165 dBm. This feature is particularly useful in challenging environments like urban canyons (where buildings block signals) or dense forests (where the signals may be obstructed by trees). The chip is also capable of maintaining a lock on the satellite signal when the device is indoors or in GPS-denied areas, providing reliable location data.
Low Power Consumption:
One of the standout features of the MT3118N/A is its low power consumption, making it ideal for battery-powered devices. In sleep mode, the chip consumes less than 1 µA, ensuring that it has minimal impact on the device's overall power usage. When actively processing signals, the chip uses approximately 30 mA of current, which is typical for GPS receivers but still highly efficient for use in portable devices like wearables or tracking devices that require long-lasting battery life.
Fast Time to First Fix (TTFF):
The MT3118N/A offers fast Time to First Fix, which means it can quickly acquire satellite signals and calculate the position after the device is powered on. In cold start conditions, the chip takes about 32 seconds to get the first fix. In warm start or hot start conditions, the time is reduced to as little as 1-2 seconds and 0.1 seconds, respectively. This ensures that the device is able to quickly respond to location requests without delay.
Specification parameters
Sensitivity:
Tracking Sensitivity: -165 dBm
Acquisition Sensitivity: -148 dBm
Reacquisition Sensitivity: -160 dBm
Position Accuracy:
Horizontal Accuracy: 2.5 meters (CEP50)
Vertical Accuracy: 5 meters
Power Consumption:
Active Mode: ~30 mA (typical)
Sleep Mode: <1 µA
Supported Satellite Systems:
GPS: L1 Frequency
GLONASS: L1 Frequency
QZSS: L1 Frequency
Interfaces:
UART: For basic communication with host devices.
SPI: For high-speed data transfer.
I2C: For integration with other sensors or devices.
Time to First Fix (TTFF):
Cold Start: ~32 seconds
Warm Start: ~1-2 seconds
Hot Start: ~0.1 seconds
Operating Voltage:
Supply Voltage: 3.3V to 5.0V
Temperature Range:
Operating Temperature: -40°C to +85°C
Package:
Available in QFN or LGA packages, ensuring a compact design for integration into a variety of applications.