Datasheet ADXRS620 (Analog Devices)

±300°/sec Yaw Rate Gyro ADXRS620 FEATURES GENERAL DESCRIPTION Qualified for automotive applications
The ADXRS620 is a complete angular rate sensor (gyroscope)
Complete rate gyroscope on a single chip
that uses the Analog Devices, Inc., surface-micromachining
Z-axis (yaw rate) response
process to create a functionally complete and low cost angular
High vibration rejection over wide frequency
rate sensor integrated with all required electronics on one chip.
2000 g powered shock survivability
The manufacturing technique for this device is the same high
Ratiometric to referenced supply
volume BiMOS process that is used for high reliability automotive
5 V single-supply operation
airbag accelerometers.
105°C operation Self-test on digital command
The ADXRS620 is an automotive grade gyroscope that is 100%
Ultrasmall and light (<0.15 cc, <0.5 gram)
pin, package, temperature, and function compatible to the
Temperature sensor output
available industrial grade ADXRS652 gyro. Automotive grade
RoHS compliant
gyroscopes have more extensive guaranteed minimum/maximum
APPLICATIONS
specifications due to automotive testing.
Vehicle chassis rollover sensing
The output signal, RATEOUT (1B, 2A), is a voltage that is
Inertial measurement units
proportional to angular rate about the axis normal to the top
Platform stabilization
surface of the package. The output is ratiometric with respect to a provided reference supply. An external capacitor sets the bandwidth. Other external capacitors are required for operation. A temperature output is provided for compensation techniques. Two digital self-test inputs electromechanically excite the sensor to test proper operation of both the sensor and the signal condi- tioning circuits. The ADXRS620 is available in a 7 mm × 7 mm × 3 mm BGA ceramic package.
FUNCTIONAL BLOCK DIAGRAM +5V (ADC REF) 100nF +5V ST2 ST1 TEMP VRATIO AV ADXRS620 CC 100nF SELF-TEST 25kΩ 25kΩ @ 25°C AGND DEMOD DRIVE MECHANICAL AC VGA AMP SENSOR AMP +5V 180kΩ ±1% VDD CHARGE PUMP AND VOLTAGE 100nF REGULATOR PGND CP1 CP2 CP3 CP4 CP5 SUMJ RATEOUT 100nF
001
22nF 22nF COUT
08887- Figure 1.
Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 www.analog.com Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 ©2010 Analog Devices, Inc. All rights reserved.
Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications Absolute Maximum Ratings Rate Sensitive Axis ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Setting Bandwidth Temperature Output and Calibration Calibrated Performance ADXRS620 and Supply Ratiometricity Null Adjustment Self-Test Function Continuous Self-Test Outline Dimensions Ordering Guide Automotive Products