Product Description
The MTK MT3329T is designed for applications requiring precise, reliable, and fast GPS tracking with low power consumption. It is particularly useful in devices that need to maintain accurate location data while operating for extended periods on battery power. Whether used in portable GPS units, wearables, smartphones, or automotive navigation systems, the MT3329T offers a versatile, cost-effective solution.
The chip’s multi-GNSS support is one of its key advantages, as it allows the MT3329T to access multiple satellite constellations, including GPS, GLONASS, and QZSS. This improves positioning accuracy and system robustness, particularly in environments where satellite signals might be weak or obstructed. The ability to track more satellites increases the chip's reliability and ensures that it can maintain an accurate position even when some satellites are not visible.
With its high sensitivity and fast acquisition times, the MT3329T can quickly calculate a position after a cold start, even in low signal environments. Its cold start sensitivity of -148 dBm and hot start sensitivity of -160 dBm ensure that the chip can work reliably indoors, in urban areas, or under foliage, where GPS signals are typically weaker.
The low power consumption of the MT3329T is another important feature. The chip operates on low power (around 30-40 mA), making it suitable for use in battery-powered devices. Its sleep and standby modes ensure that it consumes minimal power when not actively tracking, extending the operational time between charges. This is particularly beneficial in portable devices that require long battery life, such as wearables, fitness trackers, and IoT sensors.
The chip supports A-GPS, which helps to speed up the time-to-first-fix (TTFF) by using external network information like Wi-Fi or cellular data. A-GPS can be especially helpful in areas with weak satellite signals or when the GPS receiver is unable to find enough satellites to get an initial fix.
The high update rate of up to 10 Hz means that the MT3329T can provide frequent updates to the GPS position, making it ideal for high-speed applications such as automotive navigation, drone tracking, and sports applications where real-time tracking is crucial.
The chip's compact design integrates multiple GPS components into a single package, reducing the overall size and cost of the GPS solution. This integration allows for the development of smaller and more cost-effective GPS modules, which is particularly beneficial in space-constrained applications.
Specification
Chip Type: Single-chip GPS receiver with support for multi-GNSS systems (GPS, GLONASS, QZSS).
Frequency Bands: Operates in the L1 frequency band (1575.42 MHz), which is the primary frequency for GPS and similar GNSS systems.
Accuracy:
Position Accuracy: Typically 2.5 meters under open sky conditions.
Velocity Accuracy: 0.1 m/s.
Time Accuracy: 50 ns.
Sensitivity:
Cold Start Sensitivity: -148 dBm.
Hot Start Sensitivity: -160 dBm.
Power Consumption:
Operating Voltage: 2.7V to 3.6V.
Typical Power Consumption: 30-40 mA during active operation.
Power Saving Modes: Sleep and Standby modes for low power consumption.
Data Interfaces: Supports UART and I2C interfaces, enabling easy integration with microcontrollers and embedded systems.
Satellite Tracking: The MT3329T can track up to 22 satellites simultaneously, providing a stable connection and high positioning accuracy.
Update Rate: Supports up to 10 Hz update rate, providing fast and frequent location updates.
Antenna Compatibility: Supports both active and passive antennas for flexible integration into various applications.
A-GPS Support: The chip supports Assisted GPS (A-GPS), which helps speed up the process of acquiring a GPS fix using external data.
