Precision Triaxial Inclinometer and

Accelerometer with SPI

ADIS16210

Rev. A

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FEATURES

Triaxial, digital inclinometer system

±180° measurement range, roll and pitch axes

±90° gravity axis

±0.1° relative accuracy

Triaxial, digital accelerometer, high accuracy

±1.7 g measurement range

±0.05° axis-to-axis alignment

Digital internal temperature measurements

Digital internal power supply measurements

Programmable user calibration options

Single command, frame alignment

Manual accelerometer bias correction

Programmable operation and control

Sample rate/filtering

Alarm conditions and indicator output

Input/output: data ready, alarm, general-purpose

Power management functions

SPI-compatible serial interface

Serial number and device ID

Single-supply operation: 3.0 V to 3.6 V

Calibrated temperature range: −40°C to +85°C

15 mm × 24 mm × 15 mm package with flexible connector

APPLICATIONS

Platform control, stabilization, and alignment

Tilt sensing, inclinometers, and leveling

Motion/position measurement

Monitor/alarm devices (security, medical, safety)

Navigation

GENERAL DESCRIPTION

The ADIS16210 iSensor® is a digital inclinometer system that

provides precise measurements for both pitch and roll angles

over a full orientation range of ±180°. It combines a MEMS tri-

axial acceleration sensor with signal processing, addressable user

registers for data collection/programming, and a SPI-compatible

serial interface. In addition, the production process includes unit

specific calibration for optimal accuracy performance. It also

offers digital temperature sensor and power supply measurements

together with configuration controls for in-system calibration,

sample rate, filtering, alarms, I/O configuration, and power

management.

The MEMS sensor elements are bound to an aluminum core for

tight platform coupling and excellent mechanical stability. An

internal clock drives the data sampling system, which eliminates

the need for an external clock source. The SPI and data buffer

structure provide convenient access to accurate sensor data and

configuration controls.

The ADIS16210 is available in a 15 mm × 24 mm × 15 mm module

that provides mounting tabs with M2-sized mounting holes and a

flexible, edge terminated connector interface. It has an extended

operating temperature range of −40°C to +125°C.

FUNCTIONAL BLOCK DIAGRAM

ADIS16210

INCLINE

CALIBRATION

ALARMS

I/O

SELF TEST

CONTROL

REGISTERS

SPI

PORT

OUTPUT

REGISTERS

CORRECTION

AND

ALIGNMENT

DIGITAL

FILTER

TRIAXIAL

MEMS

SENSOR

TEMPERATURE

SENSOR

SUPPLY

POWER

MANAGEMENT

CS

SCLK

DIN

DOUT

GND

VDD

DIO1 DIO2

RST

CONTROLLER

Figure 1.