詳細描述：
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.
Mechanical data
?Dimensions 10.1*9.7*2.5mm
?Weight 0.5g
Features
?Support EPOTM orbit prediction
?Support SBAS ranging (WAAS, EGNOS, GAGAN,
MSAS)
?Support Jamming Removing
?Low-noise amplifier has been integrated
Interfaces
?Serial interfaces
?Digital I/O UART
GPIO
TIMEMARK (PPS)
?Protocols NMEA
PMTK
Support product
?SIM68 EVB KIT with USB V2.0 full speed interface
Performance data
?Receiver type:
?Max update rate
?Sensitivity1
Tracking:
Cold starts:
?Time-To-First-Fix2
Cold starts
Warm starts 30s
Hot starts
EPO Assist
? Accuracy
Automatic Position3
Speed4
?Operation temperature -40℃~+85 ℃
Electrical data
?Power supply 2.8~4.3V
?Backup power
?Power consumption2,5
Acquisition
Tracking
Backup 8uA
?Antenna type Active and passive
?Antenna power External
————————————————————
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
22 tracking/66 acquisitionchannel GPS receiver
GPS L1, C/A Code
5Hz
-165 dBm
-160 dBm
-148 dBm
32 s (typical)
<1s
13s（ CTTFF)
2.5m CEP
0.1m/s
2.0 V~4.3V
17mA
16mA