NavChip™ Family

High-precision, rugged Micro-Electro-Mechanical Systems (MEMS) 6-axis Miniaturized Inertial Measurement Units (IMUs) that precisely measures angular velocity and linear acceleration.

Thales NavChip 3

The NavChip family of IMUs are developed and manufactured with a robust architecture and advanced signal-processing technique that enables a level of performance unmatched in size class. The resulting architecture and patented compensation algorithms are one of a kind and, coupled with NavChip’s™ miniature size and environmental ruggedness, makes the NavChip perfect for small yet demanding applications. Using sophisticated robotic systems, each NavChip undergoes detailed analysis, calibration, and subsequent performance verification over a wide temperature range to assure a highly reliable solution.

Using proprietary technologies and advanced signal processing techniques, the NavChip achieves a level of performance, miniaturization, and environmental ruggedness superior to competing IMUs using the standard off-the-shelf MEMs sensors.

The NavChip is especially well suited for embedded applications where extremely small size, weight, and power consumption are required. With its gyro bias stability of 4°/hr and low noise it is very low drift IMU with a full-scale acceleration range of ±16g and a full-scale angular rate of 2,000°/s. It is fully factory-calibrated and temperature compensated over an operating range of -40°C to +85°C.

Alongside the standalone NavChip, an evaluation kit is also available to simplify the evaluation and integration of the NavChip. The NavChip evaluation kit comes with all of the equipment necessary to interface the NavChip to a host processor, through either USB or RS-422. The kit includes a NavChip, a NavChip adapter board, a USB cable, and software tools that allow detailed analysis of the NavChip performance.

  • Unmanned Systems
  • Augmented and Virtual Reality applications
  • Camera & Antenna Stabilization
  • Pedestrian Navigation
  • GPS/INS Integration
  • Aiming & Alignment
  • Fully-compensated Δϴ and ΔV outputs
  • Gyro bias in-run stability 5°/hr
  • Angular random walk 0.18°/√hr
  • Velocity random walk 0.03m/s/√hr
  • Full-scale angular rate of 2000°/s
  • Full-scale acceleration of ± 16g
  • Low power consumption 135mW
  • Factory calibrated bias, scale factor and misalignment (-40°C to +85°C)
  • TTL UART, SPI and I2C-compatible data output interfaces
  • Single supply operation 3.25V to 5.5V (Typical 3.3V)
  • External sync pin can to synchronize IMU data samples to an external trigger source
  • Small 12.5 x 24.5 x 6.1 mm
  • Lightweight 3 g
Technical Specifications Typical values
NavChip  NavChip Series 3 Class B  NavChip Series 3 Class A
Gyros Δ bias, scale, misalignment Factory calibrated and temperature compensated over full temperature range
In-run bias stability 5°/hr 4°/hr
Bias accuracy over temp range ± 0.2°/s
g sensitive bias 0.004°/s/g
Angle random walk 0.18 °/√hr
Scale factor accuracy ± 0.05%
Scale factor linearity 0.01%
Axis alignment accuracy ± 0.03°
Accels Δ bias, scale, misalignment Factory calibrated and temperature compensated over full temperature range
In-run bias stability 0.04 mg 0.006 mg
Velocity random walk 0.03 m/s/√hr 0.02 m/s/√hr
Bias accuracy over temp range ± 3 mg
Scale factor accuracy ± 0.09%
Scale factor linearity 0.06%
Axis alignment accuracy ± 0.03°
Limits Operating & storage temp -40°C to +85°C
Full scale acceleration range ± 16g
Full scale angle rate 2000°/s
Vdd to GND -0.3 V to +6.0 V
In/out to GND -0.3 V to 3.3 V
SWaP Size 12.5mm x 24.5mm x 5.4mm 12.5mm x 24.5mm x 6.1mm
Weight 3g
Power consumption @ 3.3 V 135mW (scales linearly with voltage)
Output Interfaces UART, SPI UART, SPI, I2C
Data Compensated ΔV and Δ Compensated ΔV and Δ , AHRS
ΔV,Δ output rate Up to 200 Hz Up to 1000 Hz
Adapters RS-422, USB/TTL serial, ADIS
Default sampling rate/period 1000 Hz (1 ms)
UART data rate 38,400 to 921,600 baud, configurable
Input Voltage 3.25 V – 5.5 V (typical 3.3 V)
Current 40 mA
Optional external sync pin 1-1000 ms period (integer)