High Performance,
Digital Output Gyroscope
ADXRS453
FEATURES
GENERAL DESCRIPTION
Complete rate gyroscope on a single chip
300°/sec angular rate sensing
The ADXRS453 is an angular rate sensor (gyroscope) intended
for industrial, instrumentation, and stabilization applications in
high vibration environments. An advanced, differential, quad
sensor design rejects the influence of linear acceleration, enabling
the ADXRS453 to offer high accuracy rate sensing in harsh envi-
ronments where shock and vibration are present.
Ultrahigh vibration rejection: 0.01°/sec/g
Excellent 16°/hour null bias stability
Internal temperature compensation
2000 g powered shock survivability
SPI digital output with 16-bit data-word
Low noise and low power
3.3 V to 5 V operation
−40°C to +105°C operation
Ultrasmall, light, and RoHS compliant
Two package options
The ADXRS453 uses an internal, continuous self-test architec-
ture. The integrity of the electromechanical system is checked by
applying a high frequency electrostatic force to the sense structure
to generate a rate signal that can be differentiated from the base-
band rate data and internally analyzed.
The ADXRS453 is capable of sensing an angular rate of up to
3ꢀꢀ0°sec. Angular rate data is presented as a 16-bit word that
is part of a 32-bit SPI message.
Low cost SOIC_CAV package for yaw rate (z-axis) response
Innovative ceramic vertical mount package (LCC_V), which
can be oriented for pitch, roll, or yaw response
The ADXRS453 is available in a 16-lead plastic cavity SOIC
(SOIC_CAV) and an SMT-compatible vertical mount package
(LCC_V), and is capable of operating across a wide voltage
range (3.3 V to 5 V).
APPLICATIONS
Rotation sensing in high vibration environments
Rotation sensing for industrial and instrumentation
applications
High performance platform stabilization
FUNCTIONAL BLOCK DIAGRAM
V
CP5
X
HIGH VOLTAGE
GENERATION
P
DD
ADXRS453
LDO
REGULATOR
DV
AV
DD
DD
HV DRIVE
ARITHMETIC
CLOCK
PHASE-
LOCKED
LOOP
LOGIC UNIT
DIVIDER
DECIMATION
FILTER
AMPLITUDE
DETECT
MOSI
MISO
SCLK
CS
TEMPERATURE
CALIBRATION
BAND-PASS
FILTER
12-BIT
ADC
SPI
INTERFACE
DEMOD
FAULT
DETECTION
Q FILTER
Q DAQ
P DAQ
Z-AXIS ANGULAR
RATE SENSOR
DV
SS
SS
SELF-TEST
CONTROL
P
SS
AV
EEPROM
Figure 1.
Rev. 0
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