GNSS模組
SIMCom presents a small, high performance and reliable assisted GPS module-SIM28M. This is a standalone L1 frequency GPS module in a SMT type and it is designed with MTK high sensitivity navigation engine, which allows you to achieves the industry’s highest levels of sensitivity, accuracy, and Time-to-First-Fix (TTFF) with lowest power consumption.
Mechanical data
?Dimensions 10.1*9.7*2.5mm
?Weight 0.5g
Features
?Support EASYTM self-generated orbit prediction
?Support EPOTM orbit prediction
?Support AGPS
?Support SBAS ranging (WAAS, EGNOS, GAGAN,
MSAS)
?Support Jamming Removing
?Low-noise amplifier has been integrated
Interfaces
?Serial interfaces
UART
?Digital I/O
GPIO
TIMEMARK (PPS)
?Protocols
NMEA
PMTK
PSIM
Performance data
?Receiver type:22 tracking/66 acquisitionchannel GPS receiver GPS L1, C/A Code
?Max update rate: 10Hz
?Sensitivity1
Tracking:-165 dBm
Reacquisition:-160 dBm
Cold starts:-148 dBm
?Time-To-First-Fix2
Cold starts 32 s (typical)
Warm starts 30s
Hot starts <1s
EPO Assist 13s（CTTFF)
? Accuracy
Automatic Position3 2.5m CEP
Speed4 0.1m/s
?Operation temperature -40℃~+85 ℃
Support product
?SIM68 EVB KIT with USB V2.0 full speed interface
Electrical data
?Power supply 2.8~4.3V
?Backup power 2.0 V~4.3V
?Power consumption2,5
Acquisition 17mA
Tracking 16mA
Backup 8uA
?Antenna type Active and passive
?Antenna power External
Certificate
?CE（in plan)
————————————————————
1.Demonstrated in liberary
2.All SV @ –130 dBm
3.50% 24 hr static, -130dBm
4.50%@ 30m/s
5. @3.3V
