ZOE-M8 - Ultra compact concurrent multi-GNSS modules

Ultra-compact GNSS module for concurrent reception of up to 3 GNSS systems (GPS/Galileo together with GLONASS or BeiDou)

The ZOE-M8G is u-blox's latest, highly integrated System in Package (SiP) GNSS module based on the high performing u-blox M8 concurrent positioning engine. The ultra miniature form factor integrates a complete GNSS receiver, including SAW filter, LNA and TCXO.

ZOE-M8G targets size constrained applications that still require high performance, even in environments where GNSS reception is limited. For RF optimization, the ZOE-M8G integrates a front-end SAW filter and an additional front-end LNA for increased jamming immunity and easier antenna integration. A passive antenna can be used to provide a highly integrated system solution with minimal eBOM.

With its dual-frequency RF front-end, the ZOE-M8G is able to utilize concurrent reception of up to three GNSS systems (GPS/ Galileo together with BeiDou or GLONASS). In addition, the ZOE-M8G provides SQI interface for optional external Flash, allowing future firmware upgrades and improved A-GNSS performance.

u-blox advanced power save modes, dedicated algorithms and complete GNSS solution mean that ZOE-M8G meets even the most stringent requirements in a wide range of industrial and consumer applications, such as UAVs, wearables and asset tracking. It also supports message integrity protection, anti-jamming, and anti-spoofing, providing reliable positioning in difficult environmental conditions as well as in security attack scenarios.

The advanced S-LGA (Soldered Land Grid Array) packaging technology enables easier and more reliable soldering processes compared to a normal LGA (Land Grid Array) package. As a result, the ZOE-M8G can be easily integrated in manufacturing processes.

  • Fully integrated and complete solution, reducing total design efforts
  • Ideal for passive antennas, due to built‑in SAW and LNA
  • High accuracy thanks to concurrent reception of up to 3 GNSS
  • Industry leading -167 dBm navigation sensitivity

For sales and technical development support from our in-house engineering team, please contact the Alpha Micro team.

Parameters Specifications
Receiver type

72-channel u-blox concurrent M8 engine

GPS/QZSS L1 C/A, GLONASS L10F , BeiDou B11, Galileo E1B/C


Nav. update rate¹

Single GNSS: up to 18Hz

2 concurrent GNSS: up to 10Hz


2.0 m CEP


Cold starts: 26s

Aided starts: 2s

Reacquisition: 1s


Tracking & Nav: -167dBm

Cold starts: -148dBm

Hot starts: -157dBm

Assistance GNSS

AssistNow GNSS Online

AssistNow GNSS Offline (up to 35 days)

AssistNow Autonomous(up to 6 days)

OMA SUPL & 3GPP compliant



RTC crystal

Optional, can be derived either from external crystal or RTC Clock

Anti jamming Active CW detection and removal. Extra onboard SAW band pass filter
Memory ROM
SQI Flash (optional) for:

FW update

AssistNow Offline

AssistNow Autonomous

Data logging

Supported antennas Active and passive
Antenna supervision Short and open circuit detection supported with external circuit
Raw data Code phase output
Odometer Integrated in navigation filter

Up to 4 circular areas

GPIO for waking up external CPU

Spoofing detection


Signal integrity Signature feature with SHA 256
Data logger³ For position, velocity, time and odometer data
² For default mode: GPS/SBAS/QZSS + GLONASS
³ External Flash required
Serial interfaces


1 SPI (Optional)

1 DDC (I²C compliant)

1 SQI interface (for optional Flash)

Digital I/O

Configurable timepulse

1 EXTINT input

Time pulse Configurable: 0.25 Hz to 10 MHz
Protocols NMEA, UBX binary, RTCM
Electrical data
Supply voltage

1.71V to 1.89V

Digital I/O voltage level

1.71V to 1.89V

Power consumption²

40mA @ 1.8V (Continuous)

12.4mA @ 1.8V (Power Save mode, 1 Hz)

Backup supply 1.4V to 3.6V
¹ EVA-M8M-0 default mode: GPS/SBAS/QZSS+GLONASS
Environmental data, quality & reliability
Operating temperature -40°C to +85°C
RoHS compliant (lead free)
Qualification according to standard JESD47 / ISO 16750
Uses u-blox M8 chips qualified according to AEC-Q100
Moisture sensitivity level 3



51 pin S-LGA (Soldered Land Grid Array): 4.5 x 4.5 x 1.0mm, 0.04 g

Part Number Description Pack Size
ZOE-M8G u-blox M8 concurrent GNSS 51-pin S-LGA module, TCXO, ROM, SAW, LNA, 4.5 x 4.5 x 1.0 mm
Support Products
u-blox M8 GNSS evaluation kit for ZOE-M8G

EVK-8/EVK-M8 evaluation kits enable simple evaluation of the high performance u-blox M8 positioning technology. The built-in USB interface provides both power supply and high-speed data transfer, and eliminates the need for an external power supply.AlphaMicro_u-blox_EVK-M8N

u-blox 8/M8 evaluation kits are compact, and their user-friendly interface and power supply make them ideally suited for use in laboratories, vehicles and outdoor locations. Furthermore, they can be used with a PDA or a notebook PC, making them the perfect companion through all stages of design-in projects.


  • Easy to use
  • Extensive visualization and evaluation features
  • Supports AssistNow Online and AssistNow Offline A-GNSS services
  • 1 USB port, 1 UART port, 1 I2C/SPI port (switchable)
  • All ports accessible outside
  • Power supply and data transfer over USB (USB V2.0 compatible)

Kit includes:

  • Compact 105 x 64 x 26 mm EVK‑M8 or EVK‑8 unit
  • USB cable
  • EVK‑M8: Active GPS / GLONASS / BeiDou antenna
  • EVK‑8: Active GPS / GLONASS antenna
  • Quick Start reference card

u-center GPS/GNSS evaluation software

The EVK-M8 download includes u-center, which is an interactive tool for configuration, testing, visualization and data analysis of positioning chips and modules. u-center provides useful assistance during all phases of a system integration project.

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Last updated: 27 January 2017