Rollover Detection In-Plane Gyroscope
Data Sheet ADXRS910
Rev. SpC Document Feedback
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 license is granted by implication or otherwise under any patent or patent rights of Analog
Devices. Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2016–2020 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
High performance, in-plane roll rate gyroscope
Temperature compensated, high precision offset and
sensitivity performance
2°/sec rms maximum gyroscope noise
Serial port interface (SPI) digital output with 16-bit data
word
<20 mA quiescent current consumption
3.3 V and 5 V operation
−40°C to +105°C temperature range
16-lead SOIC_CAV surface-mount package for in-plane roll
rate sensing
AEC-Q100 qualified for automotive applications
APPLICATIONS
Rollover detection
GENERAL DESCRIPTION
The ADXRS910 is a high performance in-plane gyroscope,
designed for automotive rollover detection applications. The
ADXRS910 also has an internal temperature sensor that is used
to compensate offset and sensitivity performance, providing
excellent stability over the −40°C to +105°C temperature range.
The gyroscope provides a full-scale range of ±300°/sec with a
sensitivity of 80 LSB/°/sec. Its resonating disk sensor structure
enables angular rate measurement around an in-plane axis. The
−3 dB lter corner frequency can be selected to be 27.6 Hz,
51.3 Hz, 109 Hz, or 196.8 Hz. The sensor data output from the
device is a 16-bit, twos complement word contained in a 32-bit
SPI transaction. SPI communications are compatible up to
10 MHz.
The ADXRS910 is available in a 16-lead inverted SOIC package.
The ADXRS910 is specified to operate at 3.3 V and 5 V, with
less than 20 mA of current consumption. Its specifications are
valid over the −40°C to +105°C temperature range.
FUNCTIONAL BLOCK DIAGRAM
GYROSCOPE
SENSOR DIE REGISTERS/MEMORY
CORIOLIS
AFE
BAND-PASS
FILTER
PHASE-
LOCKED
LOOP
CLOCK
GENERATION
NVM
MISO MOSI SCLK CS
Σ-Δ
MODULATOR
SYSTEM
CONTROLLER
RESONATOR
AFE
TRIM
AND
SELF TEST
ALU
HI GH VO LTAGE
GENERATION
X-AXIS
GYROSCOPE
SPI INTERFACE
CP VSA VSD AVDD DVDD AGND DGND VSIO
VOLTAGE REGULATION
13974-001
Figure 1.
For more information about the ADXRS910, contact the Analog Devices, Inc., Customer Interaction Center at
www.analog.com/technical_support to connect with a technical support specialist.
