AHRS inertial system Certus Mini A

MEMSgyroscopicfor drone

Product overview
Certus Mini A (IMU) combines temperature-calibrated accelerometers, gyroscopes, and magnetometers. These are coupled in a fusion algorithm to deliver accurate and reliable orientation data. The Certus Mini A features low SWaP-C (Size, Weight, Power and Cost) and multiple communication interfaces for ease of integration. It is available in both rugged and OEM variants. The OEM variant offers deep system integration, layout flexibility, and reduced SWaP-C.

Key performance
Roll & Pitch accuracy: 0.1 °
Heading (magnetic) accuracy: 0.8 °
Output data rate: up to 500 Hz
Orientation range: unlimited
Hot start filter initialization: 1 s

Features

• Sensor fusion optimized for control and health monitoring with instability prevention
• High‑performance MEMS sensors with 8‑hour temperature calibration for stable accuracy from -40 °C to 85 °C
• Linear acceleration compensation to preserve roll/pitch accuracy under short‑term accelerations; supports external GNSS for long‑term compensation
• Designed and tested to military standards
• Offered as rugged enclosure (IP67) and compact OEM PCB variant for deep integration

Variants
Rugged variant: Mission ready enclosure with IP67 ingress protection and ruggedized mechanical/environmental performance.
OEM variant: PCB-mounted form factor for reduced SWaP-C and flexible system layout.

Applications
Surveying
UAVs (unmanned aerial vehicles)
UGVs (unmanned ground vehicles)
Robotics
Marine
Motorsport

Gyroscopes
Ranges: ±250 °/s, ±500 °/s, ±2000 °/s
Initial bias: < 0.2 °/s
Scale factor stability: < 0.05 %
Cross‑axis alignment error: < 0.05 °
Random walk (ARW): 0.24 °/√h
Noise density: 0.004 °/s/√Hz
Bandwidth: 400 Hz

Magnetometers
Range: ±8 G
Scale factor stability: < 0.09 %
Cross‑axis alignment error: < 0.05 °
Noise density: 210 µG/√Hz
Bandwidth: 110 Hz

Mechanical & environmental
Rugged dimensions: 30 × 41 × 24 mm; weight: 38 g
OEM dimensions: 25 × 25 × 8 mm; weight: 7 g
Operating temperature (MIL‑STD‑810H 502.7): -40 °C to 85 °C
Shock (IEC 60068‑2‑27): 150 g, 6 ms
Rugged shock (MIL‑STD‑810H 516.8): 40 g, 11 ms
Vibration (MIL‑STD‑810H 514.8): 7.7 g RMS
Ingress protection (Rugged): IP67

Power & electrical
Rugged operating voltage: 5–36 V
OEM operating voltage: 5 V
Typical power consumption: 0.5 W
Hot start: enabled

Technical specifications
Roll & Pitch accuracy: 0.1 °
Heading accuracy (magnetic only): 0.8 °
Output data rate: up to 500 Hz
Orientation range: unlimited
Hot start filter initialization: 1 s
Accelerometer ranges: ±2 g, ±4 g, ±16 g; bias instability < 20 µg; VRW 58 mm/sec/√hr
Gyroscope ranges: ±250/±500/±2000 °/s; initial bias < 0.2 °/s; ARW 0.24 °/√h
Magnetometer range: ±8 G; noise 210 µG/√Hz
Interfaces (Rugged): Primary RS232/RS422, Auxiliary RS232, CAN, 2× GPIO
Interfaces (OEM): Primary & Auxiliary UART, CAN, 2× GPIO
Protocols: ANPP, NMEA, GNSS, CANopen; digital I/O; frequency input
Operating voltage: Rugged 5–36 V, OEM 5 V
Power consumption (typical): 0.5 W
Operating temperature: -40 °C to 85 °C
Shock & vibration: Rugged shock 40 g (11 ms), shock limit 150 g (6 ms), vibration 7.7 g RMS
Dimensions & weight: OEM 25 × 25 × 8 mm (7 g); Rugged 30 × 41 × 24 mm (38 g)
Ingress protection (Rugged): IP67