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Wireless Module

GNSS

SIM28M

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.

General features

    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 function
    • Low-noise amplifier has been integrated
     

    Interfaces

    • Serial interfaces
    - UART
    • Digital I/O
    - TIMEMARK(PPS) 
    - GPIO 
    • Protocols
    - NMEA
    - PMTK
    - PSIM 
     

    Support evaluation products

    • SIM68 EVB KIT with USB V2.0 full speed interface
     

    Electrical data

    • Power supply: +2.8V ~4.3V
    • Backup power: +2.0V ~4.3V
    • Power consumption2,5
    - Acquisition: 17mA
    - Tracking: 16mA
    - Backup: 8μA
    • Antenna type: Active and Passive
    • Antenna power: External or internal

    Performance data

    • Receiver type
               22 tracking / 66 acquisition- channel 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: 32s
    - Warm starts: 30s 
    - Hot starts: <1s
    - EPO Assist: 13s (CTTFF) 
    • Accuracy
    - Automatic Position3: 2.5m CEP
    - Speed4: 0.1m/s 
    - Timing: 10ns 
    • Operation temperature: -40℃~+85 ℃
     

    Certificate

    •  CE
     
     
     
     
    ———————————————————
    1.   Demonstrated in liberary 
    2.   All SV @ –130 dBm
    3.   50% 24 hr static, -130dBm
    4.   50%@ 30m/s
    5.   @3.3V with a passive antenna
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