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Wireless Module

GNSS

SIM28

SIMCom presents a high performance and reliable assisted GPS module-SIM28. It is in a SMT type with MTK mature GPS only navigation engine, which allows you to achieve the industry’s high levels of accuracy and Time-to-First-Fix (TTFF) with lowest power consumption.

General features

    Mechanical data

    • Dimensions: 16*12.2*2.4mm
    • Weight: 1g
     

    Features

    • Support EASYTM self-generated orbit prediction
    • Support SBAS ranging (WAAS, EGNOS, GAGAN, MSAS)
    • Support EPOTM orbit prediction
    • Support Jamming removing function
    • Low-noise amplifier has been integrated
     

    Interfaces

    • Serial interfaces
    - UART
    - SPI/I2C 
    • Digital I/O
    - TIMEMARK output 
    - EINT0 input 
    - GPIO 
    • Protocols
    - NMEA
    - PMTK 
     

    Support evaluation products

    • SIM28-TE
    • SIM28EVB KIT with USB V2.0 full speed interface
     

    Electrical data

    • Power supply: +2.8V ~4.3V
    • Backup power: +2.3V ~4.3V
    • Power consumption2,5 
    - Acquisition: 24mA
    - Tracking: 19mA
    - Standby mode: <200μA
    • Antenna type: Active and Passive
    • Antenna power
    - External or internal
    - VCC_RF

    Performance data

    • Receiver type
                22 tracking / 66 acquisition- channel GPS receiver
                GPS L1, C/A Code
    • Max.update rate: 10Hz
    • Sensitivity1
    - Tracking: -165dBm
    - Reacquisition: -160dBm
    - Cold starts: -147 dBm 
    • Time-To-First-Fix2
    - Cold starts with EASY: 13s
    - Warm starts with EASY: 1~2s 
    - Cold starts: 32s 
    - Cold starts with EPO Assist: 12.5s 
    - Hot starts: <1s 
    • Accuracy
    - Automatic Position3: 2.5m CEP
    - Speed4: 0.1m/s 
    - Timing: 10ns 
    • Operation temperature: -40℃~+85 ℃
     

    Certifications

    • CE
    • Rohs
    • REACH
     
     
     
     
     
     
    —————————————————————
    1.Demonstrated with a good active antenna
    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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