GNSS Module | GPS, GLONASS, QZSS, SBAS | based on SiRFstarV™


The W2SG0021i module is robust, reliable and compact GNSS receiver module based on CSR's SiRFStarV™ architecture, featuring excellent receiver performance. It provides easy, flexible and scalable way for system manufacturers to add GNSS positioning, locationing and/or navigation capabilities to their products. This module includes integrated MAC, baseband, RF front-end, LNA, crystal, oscillator, SAW filter; and is fully optimized to yield excellent receive sensitivity performance through careful design. It supports UART, I2C and SPI host interfaces. It is certified for global markets and supports full operation in industrial operating temperature range.


  • Small footprint: 7 mm x 7 mm x 2 mm
  • Compact, robust, reliable design for easy integration
  • GNSS Technology based on SiRFStarV™ architecture
  • Concurrent tracking of signals from GPS, GLONASS, QZSS satellite systems
  • Support for SBAS (WAAS, EGNOS, MSAS, GAGAN)
  • Protocols for output data: NMEA and OSP
  • Support for UART, I2C and SPI host interfaces
  • Global certifications available: FCC, IC, CE
  • Excellent receiver sensitivity up to -165 dBm
  • Single power supply operation, 1.8V DC
  • Ultra-low power consumption
  • Optimized RF and electrical design
  • Supports industrial temperature range operation (-40 to +85 degrees)

Block Diagram
  • FCC
  • IC
  • CE
  • IoT (Internet of Things)
  • M2M (Machine-to-Machine)
  • Personal navigation devices
  • Health and fitness monitoring devices
  • Mobile internet devices, smart phones
  • Gaming systems
  • Asset tracking, Logistics handhelds
  • Personnel locators, tags
  • Drones, UAVs
  • POS terminals, Logistics management terminals
  • Smart homes


Single GNSS RF input
Number of track verification channels: 52
Default boot-up Baud Rate: 4800 bps over NMEA
Maximum Update Rate: 5 Hz
Maximum Altitude: < 60,000 feet
Maximum Velocity: < 1,000 knots
Horizontal positioning accuracy: Autonomous: < 2.5 meters (24 hr static @ -130 dBm)
Velocity accuracy @ 30 m/s: Speed: < 0.01 m / s
Heading: < 0.01В°
TTFF @ -130 dBm: Hot start: < 1 s
Warm start: < 35 s
Cold start: < 35 s
Receive Sensitivity: Acquisition: GPS:-146 dBm
Tracking: GPS:-165 dBm,GLONASS:-165 dBm
Navigation: GPS:-162 dBm,GLONASS:-158 dBm


Document File Version Size Last Updated
Product Brief W2SG0021i_Product_Brief.pdf 1.4 269 KB 04/12/2016
Data Sheet W2SG0021i_Datasheet.pdf 1.14 1.26 MB 04/12/2016


Part Order Number Description Antenna Satellite Systems supported concurrently Boot-up Method Baud-Rate Packaging Type Buy from Distributor
W2SG0021i-T Module External GPS, GLONASS, SBAS, QZSS Internal ROM based 4800 bps over NMEA Tray Buy Now
W2SG0021i-TR Module External GPS, GLONASS, SBAS, QZSS Internal ROM based 4800 bps over NMEA Tape & Reel Buy Now