Programmable 360° Inclinometer

ADIS16203

Rev. 0

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FEATURES

0° to 360° Inclinometer

±180 output format option

14-bit digital inclination outputs

Linear output, 0.025° resolution

12-bit digital temperature sensor output

Digitally controlled bias calibration

Digitally controlled sample rate

Digitally controlled filtering

Digitally controlled direction/orientation

Dual alarm settings with rate/threshold limits

Auxiliary digital I/O

Digitally activated self-test

Digitally activated low power mode

SPI®-compatible serial interface

Auxiliary 12-bit ADC input and DAC output

Single-supply operation: 3.0 V to 3.6 V

3500 g powered shock survivability

APPLICATIONS

Tilt sensing, inclinometers

Platform control, stabilization, and leveling

Motion/position measurement

Monitor/alarm devices (security, medical, safety)

Robotics

GENERAL DESCRIPTION

The ADIS16203 is a complete incline-angle measurement system

in a single compact package enabled by the Analog Devices, Inc.,

iSensor™ integration. By enhancing the Analog Devices iMEMS®

sensor technology with an embedded signal processing solution,

the ADIS16203 provides factory-calibrated, sensor-to-digital incline-

angle data in a convenient format that can be accessed using a

serial peripheral interface (SPI). The SPI interface provides access

to multiple measurements: 360° linear inclination angles, ±180°

linear incline angles, temperature, power supply, and one auxiliary

analog input. Easy access to calibrated digital sensor data provides

developers with a system-ready device, reducing development

time, cost, and program risk.

Unique characteristics of the end system are accommodated

easily through several built-in features, such as a single-command

offset calibration, along with convenient sample rate and band-

width control.

The ADIS16203 offers the following embedded features that

eliminate the need for external circuitry and provide a simplified

system interface:

•

Configurable alarm function

•

Auxiliary 12-bit analog-to-digital converter (ADC)

•

Auxiliary 12-bit digital-to-analog converter (DAC)

•

Configurable digital I/O port

•

Digital self-test function

The ADIS16203 offers two power management features for

managing system-level power dissipation: low power mode

and a configurable shutdown feature.

The ADIS16203 is available in a 9.2 mm × 9.2 mm × 3.9 mm

laminate-based land grid array (LGA) package with a temper-

ature range of −40°C to +125°C.

FUNCTIONAL BLOCK DIAGRAM

SCLK

DIN

DOUT

CS

RST

DIO0 DIO1

SPI

PORT

TEMPERATURE

SENSOR

SELF-TEST

POWER

MANAGEMENT

AUXILIARY

I/O

ALARMS

DIGITAL

CONTROL

SIGNAL

CONDITIONING

AND

CONVERSION

CALIBRATION

AND

DIGITAL

PROCESSING

ADIS16203

VDD

COM

AUX

ADC

AUX

DAC VREF

INERTIAL

MEMS

SENSOR

AUX COM

Figure 1.