Product Description
The MediaTek MT3373CCCJ/B is a highly integrated and versatile GNSS (Global Navigation Satellite System) receiver that supports both GPS and GLONASS systems, providing precise positioning data for a wide range of applications. Its dual-constellation support improves the receiver’s performance in diverse environments, such as urban areas with many tall buildings (urban canyons) or rural areas where satellite visibility might be obstructed. By utilizing both GPS and GLONASS signals simultaneously, the MT3373CCCJ/B offers increased satellite coverage, ensuring more stable and accurate positioning.
One of the key features of the MT3373CCCJ/B is its high positioning accuracy. With horizontal accuracy of < 2.5 meters and vertical accuracy of < 5 meters, it ensures precise location tracking, making it suitable for various consumer, industrial, and automotive applications. Whether used for real-time navigation in vehicles, asset tracking in logistics, or sports and fitness applications requiring exact movement tracking, this chip provides dependable results. When used in conjunction with differential corrections (DGPS), it can further improve the positioning accuracy to sub-meter levels.
The MT3373CCCJ/B excels in time-to-first-fix (TTFF) performance. It can establish a satellite lock in under 30 seconds in cold start conditions, which is ideal for situations where a fast initial fix is necessary. Once the device has acquired satellite data, it enters warm or hot start modes, which further reduce TTFF to mere seconds or even milliseconds. This rapid acquisition capability is particularly useful for navigation systems that need to deliver instant results when powered on or after temporary power interruptions.
Another standout feature of the MT3373CCCJ/B is its low power consumption, making it an excellent choice for battery-powered devices. With its ability to operate in ultra-low power modes (as low as < 10mW), it ensures that devices using this chip can run for extended periods without draining the battery. This is particularly beneficial in devices such as wearable fitness trackers, smartphones, and portable navigation devices that need to balance continuous GPS tracking with long battery life.
The chip’s signal reception capabilities are enhanced by its support for up to 60 channels and simultaneous tracking of multiple satellite constellations. This is critical in scenarios where satellite visibility may be limited, such as when navigating in areas with dense buildings or under tree cover. The MT3373CCCJ/B’s ability to track multiple constellations not only improves positioning accuracy but also enhances signal robustness, making it reliable for a broad range of geographical conditions.
The integration of A-GPS further boosts the chip’s capabilities. A-GPS enhances satellite signal acquisition, particularly in urban environments or inside buildings, where GPS signals may be weak or blocked. By leveraging network assistance data, such as cellular network information, the MT3373CCCJ/B can obtain an initial location fix much faster than traditional GPS systems, ensuring quicker start-up times and better performance in challenging scenarios.
Lastly, the chip is equipped with a variety of communication interfaces, such as UART, I2C, and SPI, making it highly flexible and easy to integrate into a wide variety of devices. It outputs NMEA 0183-formatted data, which is a common standard for GPS and GNSS systems, ensuring compatibility with a broad array of navigation and tracking software.
In conclusion, the MediaTek MT3373CCCJ/B is a highly capable GPS/GLONASS receiver designed to deliver precise and reliable positioning data in a variety of applications. Its low power consumption, fast TTFF, and dual-constellation support make it an ideal choice for mobile devices, automotive systems, wearable technology, and asset tracking solutions, providing accurate location information even in the most challenging environments.
Specification
Positioning Accuracy:
Horizontal Accuracy: The chip offers horizontal positioning accuracy of < 2.5 meters under optimal conditions (clear sky, strong signal reception). This makes it suitable for navigation applications requiring high precision.
Vertical Accuracy: The typical vertical accuracy is < 5 meters, which is adequate for most GPS-based applications.
DGPS (Differential GPS) Support: With support for differential GPS corrections, the MT3373CCCJ/B can achieve even greater accuracy, down to 1 meter or less, depending on the available correction data.
Signal Reception:
The MT3373CCCJ/B is capable of receiving signals from up to 60 satellite channels simultaneously, improving its robustness in environments with weak or obstructed signals.
It supports L1 band for GPS and L1 band for GLONASS, ensuring compatibility with both systems.
The receiver can track multiple signals from different constellations at once, providing enhanced position stability in urban canyons, dense forests, or areas with limited line-of-sight to the sky.
Time-to-First-Fix (TTFF):
Cold Start TTFF: Under optimal conditions, the MT3373CCCJ/B typically achieves a cold start TTFF of < 30 seconds, which is the time it takes to acquire a satellite fix when no prior satellite information is available.
Warm Start TTFF: With previously cached satellite data, the chip can reduce the TTFF to less than 5 seconds, making it ideal for rapid re-location after short periods of inactivity.
Hot Start TTFF: The hot start TTFF is typically under 1 second, providing near-instantaneous positioning updates when the device remains powered on or is quickly reactivated.
Power Consumption:
Active Mode: In active tracking mode, the MT3373CCCJ/B consumes about 45-60mW, which is relatively low and ensures extended operation in devices with limited battery life.
Low Power Mode: The chip supports low-power tracking and sleep modes, where power consumption can drop as low as < 10mW. This feature is crucial for battery-powered devices, particularly wearables, where energy efficiency is critical.
The low power consumption of this chip allows it to operate for extended periods on a single charge, making it suitable for applications in smartphones, tablets, and IoT devices.
Environmental Tolerance:
The MT3373CCCJ/B is designed to operate in a broad range of environmental conditions, with an operating temperature range of -40°C to +85°C. This makes it suitable for both consumer-grade and industrial-grade applications, such as automotive navigation systems, outdoor handheld devices, and asset tracking.
The chip is also resistant to shock and vibration, ensuring reliable performance in rugged environments.
Interface and Connectivity:
The MT3373CCCJ/B integrates multiple communication interfaces for ease of integration with host devices. It supports UART (Universal Asynchronous Receiver/Transmitter) for standard data transfer, I2C for low-speed communication, and SPI (Serial Peripheral Interface) for high-speed data exchange with external components like microcontrollers or sensors.
It outputs NMEA 0183-formatted data, which is a widely used standard for GPS data transmission, ensuring compatibility with a wide range of navigation software and systems.
Built-in A-GPS Support:
The MT3373CCCJ/B includes Assisted GPS (A-GPS) functionality, which uses network data (such as cell tower information) to speed up the satellite acquisition process, especially in challenging environments or when the device has been off for a long period.
This support for A-GPS significantly improves the TTFF, especially in initial satellite fixes or areas with poor visibility to the sky.
