High Precision MEMS Gyro
Introduction
The ER-MG-068 High Precision MEMS Gyroscope (Alternative of Gyro3300) is a single-axis MEMS angular rate sensor, which is capable of measuring angular velocity up to a maximum of ±400°/s and with digital output compliant to SPI slave mode 3 protocol. Angular rate data is presented as a 24-bit word.
The ER-MG-068 is intended for industrial, instrumentation, stabilization and other high performance applications. An advanced, differential sensor design resists the impact of linear acceleration, so that ER-MG-068 can operate in extremely harsh environments in the presence of impact and vibration.
The ER-MG-068 is available in a hermetically sealed ceramic LCC surface mount package and it is capable of operating at 5V supply and a wide temperature range (−40°C to +85°C).
Features
Proven and robust silicon MEMS gyro
Up to ±400°/s measurement range
0.3°/hr bias instability
0.125°/√hr angular random walk
Digital output (SPI slave)
5V operation (4.75 ~ 5.25V supply)
Low power consumption (35 mA)
High shock and vibration rejection
Hermetically sealed ceramic LCC surface mount package (11 x 11 x 2mm)
Integrated temperature sensor
RoHS compliant
Applications
Azimuth, attitude, position measuring and keeping in GNSS-assisted INS
Heading, pitch, roll measuring in AHRS for UAV
Motion survey and keeping in MRU
Attitude & azimuth keeping, positioning in IMU
Guidance, navigation, control in MEMS system
Stabilizing & pointing in satellite antenna, target tracking system
Robotic control & orientation in autonomous machines, unmanned vehicles
Specifications
Parameters | ER-MG-068 | Unit |
Range | 400 | deg/s |
Resolution | 24 | bits |
Data Rate | 12K | Hz |
Group delay | <1 | ms |
Bandwidth (-3dB) | 300 | Hz |
Scale Factor at 25°C | 20000 | lsb/deg/s |
Scale Factor Repeatability (1σ) | <100 | ppm |
Scale Factor VS Temperature (1σ) | ±500 | ppm |
Scale Factor Non-Linearity (1σ) | <300 | ppm |
Bias Instability | <0.3 | deg/hr |
Bias stability(1σ 10s) | <2 | deg/hr |
Bias stability(1σ 1s) | <6 | deg/hr |
Angular Random Walk | <0.125 | °/√h |
Bias error over temperature (1σ) | 50 | deg/hr |
Bias temperature variations, calibrated(1σ) | <10 | deg/hr |
Bias Repeatability (1σ) | <2 | deg/hr |
Noise Peak to Peak | ±0.15 | deg/s |
G-Sensitivity | <1 | °/hr/g |
Vibration Rectification Error | <1 | °/hr/g (rms) |
Startup Time | 1 | s |
Sensor Resonant Frequency | 11K~13K | |
Environment, Power and Physical | ||
Shock (operating) | 500g, 1ms, half sine wave | |
Shock (survival) | 10000g, 1.0ms, half sine wave | |
Vibration (Operating) | 12grms, 20Hz to 2KHz Random Vibration | |
Operating Temperature | -40°C~85°C | |
Max storage (survival) Temperature | -55°C~125°C | |
Supply voltage | 5±0.25V | |
Current consumption | 40mA |
Application Techniques
1.MEMS Gyroscope: Error Compensation By Allan Variance Method
2.Impact resistance technology of MEMS gyroscope
3.Bias Temperature Compensation Analysis of MEMS Gyroscope
4.Basic Knowledge of Bias Stability of MEMS Gyroscope
5.Integrated method of three-axis MEMS gyroscope
6.MEMS Gyroscope: Sensitive Structure | Detection Circuit | Integrated Package