Precision Four Degrees of Freedom Sensor

ADIS16305

Rev. 0

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FEATURES

Digital gyroscope with range scaling

±75°/sec, ±150°/sec, ±300°/sec settings

Triaxis digital accelerometer: ±3 g

Wide sensor bandwidth: 330 Hz

Autonomous operation and data collection

No external configuration commands required

Start-up time: 180 ms

Sleep mode recovery time: 4 ms

Factory-calibrated sensitivity, bias, and alignment

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

SPI-compatible serial interface

Embedded temperature sensor

Programmable operation and control

Automatic and manual bias correction controls

Bartlett window FIR filter length, number of taps

Digital I/O: data-ready, alarm indicator, general-purpose

Alarms for condition monitoring

Sleep mode for power management

DAC output voltage

Enable external sample clock input: up to 1.2 kHz

Single-command self-test

Single-supply operation: 4.75 V to 5.25 V

2000 g shock survivability

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

APPLICATIONS

Medical instrumentation

Robotics

Platform controls

Navigation

FUNCTIONAL BLOCK DIAGRAM

MEMS

ANGULAR RATE

SENSOR

TEMPERATURE

SENSOR

SIGNAL

CONDITIONING

AND

CONVERSION

CALIBRATION

AND

DIGITAL

PROCESSING

DIGITAL

CONTROL

POWER

MANAGEMENT

OUTPUT

REGISTERS

AND SPI

INTERFACE

AUX_

ADC

AUX_

DAC

RST

CS

SCLK

DIN

DOUT

TRIAXIS MEMS

ACCELERATION

SENSOR

VCC

GND

DIO4

SELF-TEST

ADIS16305

ALARMS

DIO3

DIO2

DIO1

Figure 1.

GENERAL DESCRIPTION

The iSensor® ADIS16305 is a complete inertial system that

includes a gyroscope and triaxis accelerometer. Each sensor in

the ADIS16305 combines industry-leading iMEMS® technology

with signal conditioning that optimizes dynamic performance.

The factory calibration characterizes each sensor for sensitivity,

bias, alignment, and linear acceleration (gyro bias). As a result, each

sensor has its own dynamic compensation formulas that provide

accurate sensor measurements over a variety of conditions.

The ADIS16305 provides a simple, cost-effective method for

integrating accurate, multiaxis, inertial sensing into industrial

systems, especially when compared with the complexity and

investment associated with discrete designs. All necessary motion

testing and calibration are part of the production process at the

factory, greatly reducing system integration time. Tight orthogonal

alignment simplifies inertial frame alignment in navigation systems.

An improved SPI interface and register structure provide faster data

collection and configuration control. The ADIS16305 uses a pinout

that is compatible with the ADIS1635x, ADIS1636x, and

ADIS1640x families, when used with an interface flex connector.

This compact module is approximately 23 mm × 31 mm × 8 mm

and provides a standard connector interface, which enables

horizontal or vertical mounting.