High Precision MEMS Gyroscope

ER-MG-068 (<0.3°/h)
1. <0.3°/hr bias instability;
2. <0.125°/√hr angular random walk;
3. Small size: 11 x 11 x 2mm.

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Introduction

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 tactical 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)	<1	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