Economical MEMS Gyroscope

High Performance Navigation Grade MEMS Gyroscope

ER-MG2-200 (<0.02°/hr)
1.Up to 200°/s measurement range;
2.<0.02°/hr bias instability;
3.<0.005°/√hr angular random walk.

High Performance Navigation Grade MEMS Gyroscope

Economical MEMS Gyroscope

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    Introduction

    ER-MG2-200 High Performance Navigation Grade MEMS Gyroscope

    Introduction
    ER-MG2-200, a high performance MEMS gyro sensor with 0.02°/hr bias instability and 0.005°/√hr angular random walk, is specially designed for north seeking, pointing, initial alignment in logging tools/gyro tools, mining/drilling equipment, UAV launch systems, satellite antenna, target tracking system and so on. Thanks to the high performance, ER-MG2-200 can also used in high precision attitude measuring, stabilization control, positioning, navigating in navigation grade MEMS IMU/INS, land surveying/land mobile mapping system, railway train system, etc. So ER-MG2-200 is a best, cost effective, robust, reliable, small size, light weight, low power alternative of medium-low navigation grade FOG DTG with north seeking, precision attitude measuring , inertial positioning and navigation function.
    The ER-MG2-200 High Performance Navigation Grade Gyroscope is a single-axis MEMS angular rate sensor (gyroscope) capable of measuring angular velocity up to a maximum of ±100°/s with digital output compliant to SPI slave mode 3 protocol. Angular rate data is presented as a 24-bit word.
    The ER-MG2-200 is intended for north seeking applications. As an advanced, differential sensor design rejects the influence of linear acceleration, enabling ER-MG2-200 to operate in exceedingly harsh environments where shock and vibration are present.
    The ER-MG2-200 is available in a hermetically sealed ceramic LCC surface mount package, and is capable of operating at 5V supply and a wide temperature range (−40°C to +85°C).

    Features
    Proven and robust silicon MEMS gyro
    0.02°/hr bias instability
    0.005°/√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 (11x11x2mm)
    Integrated temperature sensor
    RoHS compliant

    Application areas
    North seeking in logging tools/gyro tools
    Pointing, steering and guiding in advanced mining/drilling equipment
    Initial alignment/UAV launch systems
    Direction pointing and tracking in satellite antenna, target tracking system
    Guidance and navigation in navigation grade MEMS system
    Orientating and positioning in railway train system
    Precision platform attitude measuring and controls
    Precision attitude, position measuring in navigation grade MEMS IMU/INS
    North finding and positioning in land surveying/land mobile mapping system
    Petroleum exploration
    Bridge, tall building, tower, dam monitoring
    Rock and soil monitoring
    Mining

    Specification of High Performance Navigation Grade Gyroscope

    Parameters ER-MG2-200 Unit Notes
    Range 200 deg/s Clockwise rotation is positive output, clamped at ±105% FS during over-range
    Resolution 24 bits /
    Data rate 2k Hz Refresh rate of the output data at room temperature
    Phase delay (@3DB) ≤90 deg /
    Bandwidth (-3dB) 50 Hz Defined as the frequency for which attenuation is >-3dB
    Scale factor at 25°C 40000 lsb/deg/s Exit setting
    Scale factor repeatability (1σ) <100 ppm Day by day at setting Temp (1σ)
    Scale factor vs temperature (1σ) ±300 ppm Over temperature range (1σ)
    Scale factor non-linearity (1σ) <300 ppm Percentage of dynamic range using a best straight line fit
    Bias instability <0.02 deg/hr Allan Variance @25℃
    Bias stability (1σ 10s) <0.1 deg/hr /
    Bias stability (1σ 1s) <0.3 deg/hr /
    Bias repeatability (1σ ) <0.1 deg/hr /
    Angular random walk <0.005 °/√h Allan Variance @25℃
    Bias error over temperature (1σ) 5 deg/Hr Over temperature range(1σ)
    Bias temperature variations, calibrated (1σ) <0.5 deg/Hr Over temperature range(1σ)
    Noise peak to peak <0.04 deg/s Over the Bandwidth frequency range, at room temperature
    G-Sensitivity <1 °/hr/g Any axis,Tested over±1g
    Vibration rectification error <1 °/hr/g (rms) (12gRMS,20-2000)
    Startup time 750m s Time to operational output
    Sensor resonant frequency 10.5-13.5K Hz Gyro resonance frequency
    Environment, Power and Physical
    Shock (operating) 1000g, 1ms
    Shock (survival) 10000g, 10ms
    Vibration (operating) 18grms, Screening spectrum
    Operating temperature -40℃~+85℃
    Max storage (survival) temperature -55℃~+125℃
    Supply voltage 5±0.25V
    Current consumption 40mA

    Compare with ER-MG2-100

    Parameters ER-MG2-100 ER-MG2-200 Unit
    Measuring range 100 200 deg/s
    Bias instability 0.02 0.02 deg/hr
    Angular Random Walk 0.005 0.005 °/√h
    Bias stability (1σ 10s) 0.1 0.1 deg/hr
    Bias stability (1σ 1s) 0.3 0.3 deg/hr
    Bandwidth (-3dB) 12 50 Hz

    From the above data, it can be seen that ER-MG2-200, as a new type of north seeking MEMS gyroscope launched after ER-MG2-100, maintains the original accuracy level, and expands the range and bandwidth range on this basis, meeting the higher requirements of the industry.


    Application Techniques

    1.Basic Knowledge of Bias Stability of MEMS Gyroscope

    2.Impact resistance technology of MEMS gyroscope

    3.Classification And Performance Improvement Of MEMS Gyroscope

    4.MEMS Gyroscope: The Third Generation Of Gyroscopes Is Leading The Way

    5.MEMS Gyroscope: Sensitive Structure | Detection Circuit | Integrated Package

    6.Comparison Of Technical Specifications Of Navigation Grade MEMS Gyroscope


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