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GNSS

SIM28

GNSS Module

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.

Product Details

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:24 mA
-- Tracking:19mA
-- Standby mode:<200μA
• Antenna type
Active and Passive
•Antenna power 
External or internal
VCC_RF
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:-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 ℃
 
-------------------------------------
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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