u-blox EVA-7M

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EVA-7M-0

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u-blox EVA-7M
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Product description

The EVA-7M standalone GNSS module features the reliable performance of the u-blox 7 positioning engine (receiving GPS, GLONASS, QZSS and SBAS signals). The EVA-7M delivers high sensitivity and minimal acquisition times in the ultra compact EVA form factor.

The EVA-7M is an ideal solution for cost and space-sensitive applications. It is easy to design-in, only requiring an external GNSS antenna in most applications. The layout of the EVA‑7M is especially designed to ease the customer’s design and limit near field interferences since RF and digital domains are kept separated.

EVA-7M uses a crystal oscillator for lower system costs. Like other u-blox GNSS modules, the EVA-7M uses components selected for functioning reliably in the field over the full operating temperature range.

The EVA-7M is easily integrated in manufacturing, thanks to its QFN-like package and low moisture sensitivity level. The modules are available in 500 pcs/reel, ideal for small production batches. The EVA-7M module combines a high level of integration capability with flexible connectivity options in a miniature package. This makes it perfectly suited for industrial and mass-market end products with strict size and cost requirements. The DDC (I2C compliant) interface provides connectivity and enables synergies with u-blox cellular modules.

The EVA-7M module is manufactured in ISO/TS 16949 certified sites and qualified as stipulated in the JESD47 standard.

Technical specifications

Features

  • Receiver type - 56-channel u-blox 7 GNSS engine GPS/QZSS L1 C/A, GLONASS L1 FDMA, SBAS: WAAS, EGNOS, MSAS 
  • Max nav. update rate - 10 Hz
                      GPS    GLONASS 
  • Accuracy
    - Position 2.5 m CEP 4.0 m CEP
    - SBAS 2.0 m CEP n.a. 
  • Acquisition
    - Cold starts: 30 s 32 s
    - Aided starts: 5 s n.a.
    - Reacquisition: 1 s 3 s 
  • Sensitivity
    - Tracking and Nav: –160 dBm –158 dBm
    - Cold starts: –147 dBm –139 dBm
    - Warm starts: –148 dBm –145 dBm
  • Assistance GPS
    - AssistNow Online
    - AssistNow Offline
    - AssistNow Autonomous OMA SUPL & 3GPP compliant 
  • Oscillator - Crystal 
  • Real time clock (RTC) - Can be derived either from onboard GNSS crystal (for lowest system costs and smallest size) or from external RTC Clock (Default mode, for lower battery current) 
  • Anti jamming - Active CW detection and removal 
  • Memory - Onboard ROM 
  • Supported antennas - Active and passive1 
  • Antenna supervision - Short and open circuit detection supported with external circuit

 

Electrical data

  • Supply voltage - 1.65 V to 3.6 V 
  • Digital I/O - 1.65 V to 3.6 V voltage level 
  • Power Consumption - 16.5 mA @ 3 V (Continuous) 4 mA @ 3V Power Save mode (1 Hz) 
  • Backup Supply - 1.4 to 3.6V

Interfaces

  • Serial interfaces - 1 UART 1 USB 1 SPI (Optional) 1 DDC (I2C compliant)
  • Digital I/O - Configurable timepulse 1 EXTINT input for Wakeup 
  • Timepulse - Configurable 0.25 Hz to 10 MHz 
  • Protocols - NMEA, UBX binary, RTCM

Environmental data, quality & reliability

  • Operating 
    - temp. –30° C to 85° C Storage 
    - temp. –40° C to 105° C 
  • RoHS compliant (lead-free) and green (no halogens) 
  • Qualification according to standard JESD47 
  • Manufactured in ISO/TS 16949 certified production sites
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