[Chip solution]：AT6558R
[Communication interface]：UART
[Operating voltage]： 2.7-3.6V
[Communication protocol]：NMEA0183 V4.1 and previous versions
[Product size]：20.0*22.0*7.8mm
[Introduction]：E108-GN03D is a high-performance,highly integrated, low-power, low-cost multi-mode satellite positioning and navigation module. Based on the AT6558R solution, it can be used in vehicle navigation, smart wearables, drones and other GNSS positioning and navigation applications. It supports BDS/GPS/GLONASS, is small in size and low in power consumption, and provides software and hardware interfaces compatible with other module manufacturers, which greatly reduces the user's development cycle. It also supports multiple ways to connect to other peripherals, supports UART and GPIO interfaces, and can be customized if I2C and SPI interfaces are required.
| Main parameters | Performance | Remark | ||
| minimum value | Typical value | maximum value | ||
| Working voltage (V) | 2.7 | 5 | 5.6 | Exceeding 5.5V may burn the module |
| Communication level (V) | 3.3 | Using 5V TTL risks burning out | ||
| Working temperature (℃) | -40 | - | 85 | Industrial grade design |
| humidity | 5% | - | -95%RH | No condensation |
| Main parameters | Describe | Remark |
| Baud rate (bps) | 4800~115200 | Default 9600 |
| data bits | 8bit | - |
| Stop bit | 1 | - |
| Communication interface | UART | - |
| Product size | 20.0*22.0*7.8mm | ±0.2mm |
| Antenna interface | ceramic antenna | - |
| Communication protocol | Support NMEA0183 V4.1 and previous versions | - |
| Location update rate | 1Hz | The maximum positioning update frequency can reach 10Hz |
| Supported positioning systems | BDS/GPS/GLONASS | BDS B1、GPS L1、GLONASS L1 |
| Product weight | 7.9 | ±0.1g |
| Category | Indicator items | Typical value | unit |
| Positioning time (test condition 1) | cold start | ≤32 | s |
| hot start | ≤1 | s | |
| recapture | ≤1 | s | |
| Sensitivity (test condition 2) | cold start | -148 | dBm |
| hot start | -156 | dBm | |
| recapture | -160 | dBm | |
| track | -162 | dBm | |
| Accuracy (test condition 3) | Horizontal positioning accuracy | <2.5 | m |
| Speed positioning accuracy | <0.1 | m/s | |
| Timing accuracy | 30 | ns | |
| Power consumption (test condition 4) | E108-GN03 capture current | 25 | mA |
| E108-GN03S capture current | 26 | ||
| E108-GN03D capture current | twenty four | ||
| E108-GN03 tracking current | 25 | mA | |
| E108-GN03S tracking current | 26 | ||
| E108-GN03D tracking current | twenty four | ||
| E108-GN03 sleep current | 64 | uA | |
| E108-GN03S sleep current | 57 | ||
| E108-GN03D sleep current | 0.3 |
Note: The above results are for GPS/Beidou dual-mode working mode.
[Test condition 1]: The number of receiving satellites is greater than 6, the signal strength of all satellites is -130dBm, the average value is taken after 10 tests, and the positioning error is less than 10 meters.
[Test condition 2]: External LNA noise coefficient is 0.8, the number of receiving satellites is greater than 6, and the received signal strength value is locked within five minutes or without losing lock.
[Test Condition 3]: Open and unobstructed environment, 24 hours of continuous power-on test, 50% CEP.
[Test Condition 4]: The number of receiving satellites is greater than 6, and the signal strength of all satellites is -130dBm.
