SIM908 GSM GPS Module

SIM908 GSM GPS Module

SIM908 module is a complete Quad-Band GSM/GPRS module which combines GPS technology for satellite navigation.

The compact design which integrated GPRS and GPS in a SMT package will significantly save both time and costs for customers to develop GPS enabled applications. 

Featuring an industry-standard interface and GPS function, it allows variable assets to be tracked seamlessly at any location and anytime with signal coverage.

General features of SIM908 GSM GPS Module

• Quad-Band 850/900/18001900MHz 
• GPRS multi-slot class 10 
• GPRS mobile station class B 
• Compliant to GSM phase 2/2+ 

          - Class 4 (2 W @ 850/900 MHz) 

          - Class 1 (1 W @ 1800/1900MHz) 

• Control via AT commands (GSM 07.07 ,07.05 and SIMCom enhanced AT Commands) 
• SIM application toolkit 
• Supply voltage range :

          - GPRS : 3.2 ~ 4.8 V

          -GPS : 3.0 ~ 4.5V 

• Low power consumption
• Dimensions : 30*30*3.2mm 
• Weight : 5.2g 
• Operation temperature : -40 °C to +85 °C

Specifications for SMS via GSM / GPRS 

• Point-to-point MO and MT 
• SMS cell broadcast 
• Text and PDU mode

Specifications for audio 

• Tricodec 

          - Half rate (HR) 

          - Full rate (FR) 

          - Enhanced Full rate (EFR) 

• Hands-free operation 
• Echo cancellation 

Specifications for data transfer 

• GPRS class 8/10 : max. 85.6 kbps (downlink) 
• PBCCH support 
• Coding schemes CS 1, 2, 3, 4 
• CSD up to 14.4 kbps 
• USSD 
• Non transparent mode 
• PPP-stack 
• Integrated TCP/IP stack

Compatibility 

• AT cellular command interface 

Specification for GPS

• Receiver type 

          - 42-channel 
          - GPS L1 C/A code, 
          - High-performance STE engine

• Sensitivity 

          - Tracking : -160 dBm 
          - Cold starts : -143 dBm 

• Time-To-First-Fix 

          - Cold starts: 30s (typ.) 
          - Hot starts: 1s (typ.) 

• Accuracy 

          - Horizontal position : <2.5m CEP 

• Power consumption (GSM engine in idle mode) 

          - Acquisition 77mA 
          - Tracking 76mA

Interfaces 

• 80-pad with SMT type 
• Interface to external SIM 3V/ 1.8V 
• Dual analog audio interfaces 
• SPI interface 
• RTC backup 
• Charge interface 
• A serial interface and a debug interface for GSM/GPRS
• Debug interface for GPS NMEA information output
• Two separate antenna connectors for GSM/GPRS&GPS