The STA1085EOA is a high-performance global navigation satellite system (GNSS) processor developed by STMicroelectronics for use in in-vehicle navigation and information systems applications. The device supports multiple satellite constellations, real-time position correction and interfacing with automobiles, making it ideal for in-vehicle navigation devices, telematics units (TCUs) and advanced driver assistance systems (ADAS).
The STA1085EOA’s superior integration capabilities, low power consumption and AEC-Q100 certification make it the preferred solution for OEMs and Tier 1 suppliers developing reliable, high-precision positioning electronics for the automotive industry.
Technical specifications
- GNSS Support:
- GPS, Galileo, GLONASS, BeiDou (multi-star support).
- L1 frequency band
- SBAS support (WAAS, EGNOS, MSAS).
- Architecture:
- GNSSSTA1085 baseband processor.
- Built-in high performance ARM architecture core.
- Accuracy:
- Positioning accuracy <2.5 meters (typical).
- Supports SBAS or A-GNSS.
- Interface:
- UART for NMEA output
- SPI, I²C, GPIO for external communication.
- Operating voltage:
- 1.2V
- I/O: 3.3V
- Housing: Panel: The panel is manufactured and mounted in such a way that it is not too bulky:
- QFN, compact size to integrate into automotive circuit boards.
- QFN housing for PCB mounting:
- -40 °C to +85 °C ( AEC-Q100 Grade 3 certified ).
- Safety features:
- Integrated anti-counterfeiting and signal verification mechanism.
- Power consumption:
- Optimized for low power operation in continuously on automotive systems.
STA1085 – STMicroelectronics product page.
Key Features
- Multi-constellation GNSS support for global position coverage
- Automotive Certification (AEC-Q100) for in-vehicle applications
- Low power design for improved signal sensitivity
- Integrated interface for easy integration with on-board information and communication processors
- Compact QFN housing for electronic devices with limited space.
- Advanced security features that support tamper detection and signal integrity checks
STA1085EOA Applications
- in-vehicle navigation system
The STA1085EOA is used in in-vehicle navigation systems and stand-alone navigation modules to provide accurate real-time GPS monitoring in urban environments or tunnels. Its support for multiple satellite constellations ensures reliable operation on a global scale.
- Telematics Control Unit (TCU)
This chip is part of the vehicle connectivity platform that provides operation of the location tracking, fleet tracking and eCall functions. Its low power consumption is suitable for standby and continuous connectivity. 3.
- Advanced Driver Assistance System (ADAS).
This processor contributes to the safety function of ADAS by providing real-time vehicle position and direction data to support the following applications:
- lane-level positioning
- Speed limit detection
- semi-autonomous driving – route planning
- Stolen vehicle tracking system
In conjunction with mobile or radio modules, the STA1085EOA provides real-time location data in the event of vehicle theft or loss and helps emergency services track vehicles with high accuracy.
5 .Smart antenna and vehicle tracking
The STA1085EOA , with its integrated smart antenna and standalone GPS tracker, provides accurate positioning in a compact footprint and low power consumption for aftermarket or OEM integration.
Why should you choose the STA1085EOA from DRex Electronics?
DRex Electronics specializes in supplying leading-edge GNSS processors, SoCs and telematics integrated circuits such as the STA1085EOA, and our team provides procurement expertise and technical consulting to OEMs, vehicle system integrators and fleet solution providers.
Benefits of choosing DRex for your procurement:
- Discover our GNSS, automotive SoC and telematics solutions.
- ISO 9001 certified procurement services with full traceability.
- Global delivery and scalable support from prototyping to mass production.
- 🔧 Technical support for integration and configuration of GNSS modules.
- Competitive pricing and short lead times for automotive integrated circuits.
