SIMCom Wireless Solutions Co.,Ltd.

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GNSS Module


SIMCom presents a high performance and reliable GNSS module-SIM68MB. This is a standalone GPS L1 frequency and BD2 GNSS module in a SMT type with MTK’s high sensitivity navigation engine, which allows customer to achieve industry’s high level sensitivity, accuracy, and Time-to-First-Fix (TTFF) with lower power consumption.


Product details

Mechanical data
•Dimensions: 10.1*9.7*2.5mm
•Weight: 0.5g
•Support GPS/BD2
•Support EASYTM self-generated orbit prediction
•Support EPOTM orbit prediction
•Support SBAS ranging (WAAS, EGNOS, GAGAN,
•Support DGPS (RTCM)
•Support Jamming Removing
•Low-noise amplifier has been integrated
•Serial interfaces UART
•Digital I/O EINT0 input
Pulse-per-second (PPS)
•Protocols NMEA
Support product
•SIM68 EVB KIT with USB V2.0 full speed interface
Performance data
•Receiver type
33tracking/99 acquisitionchannel GNSS receiver
•Max. update rate 10Hz
Tracking:-165 dBm
Reacquisition:-160 dBm
Cold starts:-148 dBm
Cold starts:28 s
Warm start:26 s
Hot starts:<1s
EPO Assist:13s(CTTFF)
• Accuracy
Automatic Position3:<2.5m CEP
•Operation temperature5: -40℃~+85 ℃
Electrical data
•Power supply: 2.8V~4.3V 
•Backup power: 2.3V~4.6V
•Power consumption2,6
Acquisition: 25mA
Tracking: 18mA
AlwaysLocateTM: 340uA
Backup 14uA
•Antenna type Active and passive
•Antenna power External or internal VCC_RF 
1.Demonstrated in lab
2.All SV @ –130 dBm, GPS&BD2 mode
3.50% 24 hr static, -130dBm,GPS&BD2mode
4.50%@ 30m/s
5.When at -40℃~ -30℃,the sensitivity will be somewhat worse
6. @2.8V with a passive antenna


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