描述 Description

SIMCom presents a small, high performance and reliable assisted GPS module-SIM28ML. 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.
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特性 Features

Mechanical data

? Dimensions: 10.1*9.7*2.5 mm

? Weight: 0.5g

Features

? Support EPOTM orbit prediction

? 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

Support 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 consumption
- Acquisition: 17mA
- Tracking: 16mA
- Backup: 8μA

? Antenna type: Active and Passive

? Antenna power: External
Performance data

? Receiver type
22 tracking / 66 acquisition- channel GPS receiver
GPS L1, C/A Code

? Max.update rate: 5Hz

? Sensitivity1
- Tracking: -165 dBm
- Reacquisition: -160 dBm
- Cold starts: -148 dBm

? Time-To-First-Fix2
- Cold starts: 32s (typical)
- Warm starts: 3s
- Hot starts: <1s
- EPO Assist: 13s (CTTFF)

? Accuracy
- Automatic Position3: 2.5m CEP
- Speed4: 0.1m/s

? Operation temperature: -40℃~+85 ℃

Certifications
?CE




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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