描述 Description

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.?
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特性 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






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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