MediaTek

MT3118N/A

  • The MT3118N/A is a highly efficient, multi-constellation GPS receiver SoC that provides high-accuracy positioning with low power consumption. Its ability to support GPS, GLONASS, and QZSS makes it a versatile solution for various location-based services (LBS), navigation systems, and tracking devices. The chip's high sensitivity ensures reliable performance in challenging environments, while its low power design is ideal for battery-operated devices like wearables and IoT devices. With fast Time to First Fix (TTFF) and accurate positioning capabilities, the MT3118N/A is a powerful and efficient solution for modern GPS and location-based applications.

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.


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