ANALOG DEVICES ADXRS800 Service Manual

High Performance, SPI Digital Output,

ADXRS800

SPI

INTERFACE

MISO

MOSI

SCLK
CS

HIGH VOLTAGE

GENERATION

EEPROM

P

SS

CP5

AV

SS

V

X

LDO

REGULATOR

P

DD

DV

SS

DV

DD

AV

DD

REGISTERS/MEMORY

BAND-PASS

FILTER

FAULT

DETECTION

TEMPERATURE

CALIBRATION

DECIMATION

FILTER

ALU

PHASE

LOCKED

LOOP

CLOCK

DIVIDER

DEMOD

Q FILTER

Q DAQ

P DAQ

HV DRIVE

ST

CONTROL

ADC 12

AMPLITUDE

DETECT

09106-001

Z-AXIS ANGULAR

RATE SENSOR

ADXRS800

Data Sheet

FEATURES

Excellent null offset stability over temperature
High vibration rejection over a wide frequency range
2000 g powered shock survivability
SPI digital output with 16-bit data-word
Low noise
Continuous self-test
Fail-safe functions
Temperature sensor

3.3 V and 5 V operation

−40°C to +105°C operation

Small, low-profile industry standard SOIC package provides

yaw rate (Z-axis) response

Innovative ceramic vertical mount package (VMP) provides

pitch and roll rate response

Qualified for automotive applications

APPLICATIONS

Electronic stability control
High performance platform stabilization

Angular Rate Sensor

GENERAL DESCRIPTION

The ADXRS800 is an angular rate sensor (gyroscope) intended
for automotive electronic stability control, vehicle rollover
detection, and other high performance applications. An advanced,
differential, quad-sensor design rejects the influence of linear
acceleration, enabling the ADXRS800 to operate in exceedingly
harsh environments where shock and vibration are present.

The ADXRS800 uses an internal, continuous self-test archi­tecture. 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 baseband rate data and internally analyzed.

The ADXRS800 is capable of sensing an angular rate of up to
±300°/sec. Angular rate data is presented as a 16-bit word, as
part of a 32-bit SPI message.

The ADXRS800 is available in a cavity plastic SOIC-16 and
an SMT-compatible vertical mount package and is capable of
operating across both a wide voltage range (3.3 V to 5 V) and
temperature range (−40°C to +105°C).

FUNCTIONAL BLOCK DIAGRAM

For more information about the ADXRS800, please contact the Analog Devices, Inc., Customer Interaction Center at

http://www.analog.com/en/content/technical_support_page/fca.html to connect with a technical support specialist.

Rev. SpB

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