Product Description
The MTK MT3337 is built around the idea of providing high-performance GPS capabilities while being power-efficient and compact. It integrates multiple features designed to enhance its usability in diverse applications.
At its core, the chip uses advanced algorithms to deliver faster Time-to-First-Fix (TTFF), which is a crucial aspect of GPS performance. For instance, a cold start requires the GPS chip to acquire data from multiple satellites and calculate the position from scratch, which traditionally can take time. However, the MT3337 significantly reduces the cold-start time compared to previous models, making it ideal for devices that need rapid positioning data upon power-up.
In terms of signal sensitivity, the MT3337 excels in challenging environments. Even when signals are weak or obstructed, it can still provide accurate location data, thanks to its ability to track signals from a variety of satellites. It also uses techniques such as Assistive GPS (A-GPS), which relies on external data (e.g., Wi-Fi or cellular networks) to improve positioning accuracy, particularly in areas with poor satellite visibility.
The MT3337's low power consumption is another key feature, making it an excellent choice for battery-powered devices. It includes several low-power modes such as Sleep mode, which helps conserve energy when the GPS receiver is not in use, yet can quickly wake up when needed to provide location data again.
For integration, the MT3337 is designed with a minimal external component footprint. It includes an integrated low-noise amplifier (LNA) and other essential GPS processing elements, which helps reduce the size and cost of the GPS solution while maintaining excellent reception.
Another standout aspect of the MT3337 is its compatibility with multiple satellite systems. It doesn’t just work with GPS, but also supports GLONASS, QZSS, and other global navigation systems, which increases its accuracy and robustness in different geographic locations. This multi-constellation support ensures that the chip performs well in areas with low satellite visibility or where traditional GPS might not be as reliable.
The MT3337 is also highly flexible when it comes to interfacing with other devices. It supports UART for easy connection to microcontrollers and processors, making it suitable for embedded systems and other custom applications. The option for I2C allows for integration into more complex systems requiring multi-device communication.
Specification
Chip Type: Single-chip GPS receiver with support for multiple GNSS systems.
Frequency Bands: It supports the L1 band (1575.42 MHz), which is the primary GPS frequency used by most global navigation satellite systems.
Accuracy:
Position Accuracy: Typically 2.5 meters under open sky conditions.
Velocity Accuracy: 0.1 m/s.
Time Accuracy: 50 ns.
Antenna Input: It supports external active and passive antennas, allowing flexibility in signal reception quality.
Sensitivity:
Cold Start Sensitivity: -148 dBm.
Hot Start Sensitivity: -160 dBm.
Power Consumption:
Operation Voltage: 2.7V to 3.6V.
Power Consumption: Typically around 35 mA during active GPS acquisition and even lower in power-saving modes.
Data Interface: The MT3337 supports both UART (Universal Asynchronous Receiver-Transmitter) and I2C interfaces, making it versatile for communication with microcontrollers and other embedded systems.
Tracking Capacity: The chip can track up to 22 satellites simultaneously, ensuring robust performance in various environments.
Update Rate: It supports up to 10 Hz update rate for GPS data, suitable for high-speed applications.
