Combined Gyroscope
and 3-Axis Accelerometer
Data Sheet ADXC1501
Rev. Sp0 Document Feedback
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FEATURES
Combined gyroscope and 3-axis, low g accelerometer
Temperature compensated, high precision bias, and
sensitivity performance
±30 mg accelerometer bias stability over temperature
±2°/sec gyroscope null stability over temperature
2.5 mg rms typical accelerometer noise at 35.6 Hz
0.1°/sec rms typical gyroscope noise at 35.6 Hz
Gyroscope: linear acceleration rejection of 0.03°/sec/g
Acceleration: ±32 g overload performance
SPI digital output with a 16-bit data-word and a 4-bit CRC
Comprehensive electromechanical fail-safe features
6 kHz data update rate
Programmable filter response
<16 mA quiescent current draw
3.3 V or 5 V operation
−40°C to +105°C temperature range
16-lead SOIC package for robust EMI performance
Qualified for automotive applications
APPLICATIONS
Electronic stability control
Chassis control
GENERAL DESCRIPTION
The ADXC1501 is a yaw rate gyroscope and 3-axis accelerometer
combined in a single package. It is designed for electronic
stability control and other high performance applications that
require yaw rate and acceleration signals simultaneously. An
internal temperature sensor compensates offset and sensitivity
performance, providing excellent stability over the −40°C to
+105°C temperature range.
A digital serial port interface (SPI) transmits the yaw rate and
acceleration data to a host microcontroller. A 4-bit cyclical
redundancy check (CRC) provides fault coverage for the
transmitted SPI data, and internal fault detection routines
ensure the integrity of all reported yaw rates and acceleration
data. A fully integrated electromechanical continuous self test
(CST) routine provides run-time diagnostic capability for
assessing the health of each MEMS element.
An advanced gyroscope sensor design rejects the linear
acceleration effects of shock and vibration, enabling the ADXC1501
to operate in harsh environments. The accelerometer signal
chain is designed to prevent overload conditions from
occurring in these same harsh environments.
The ADXC1501 is designed to operate at either 3.3 V or 5 V. At
less than 16 mA current consumption, the ADXC1501 can be
used in energy sensitive applications.
FUNCTIONAL BLOCK DIAGRAM
ACCELERATION
SENSOR
DIE
GYROSCOPE
SENSOR
DIE
XY SENSOR
Z SENSOR
MISO MOSI
ADXC1501
SCLK CS
CP
Z-AXIS
GYROSCOPE
VSA VSD AVDD DVDD AGND DGND VSIO VCM
RESONATOR
AFE
TRIM
AND
SELF TEST
XY
AFE
Σ-∆
MOD
Σ-∆
MOD
TEMP
SENSOR
Σ-∆
MOD
SPI INTERFACE
HIGH VOLTAGE
GENERATION
CORIOLIS
AFE
Σ-∆
MOD
BAND-
PAS S
FILTER
VOLTAGE REGULATION
ALU
PHASE-
LOCKED
LOOP
NVM
CLOCK
GENERATION
REGISTERS/MEMORY
Z
AFE
Σ-∆
MOD
SYSTEM
CONTROLLER
SYNC TPA TPB
TEST/DEBUG
13089-001
Figure 1.
For more information about the ADXC1501, contact the Analog Devices, Inc., Customer Interaction Center at
http://www.analog.com/technical_support to connect with a technical support specialist.
