SIMCOM SIM908

Specifications

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
•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:
  - SIM908:5.2g
  - SIM908-C:11.1g
•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
 

Certifications
•CE
•ROHS