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.

Share to:

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, weapon/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 in weapon/UAV launch systems
Direction pointing and tracking in satellite antenna, target tracking system
Guidance and navigation in navigation grade MEMS weapon 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
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