Programmable Dual Axis Digital

Accelerometer and Impact Sensor

Preliminary Technical Data

ADIS16204

Rev. PrA

10/10/2006 4:24 AM

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FEATURES

Dual-axis impact sensing

Dual-axis acceleration sensing, +70g, +35g

14-bit resolution

17.1 mg/LSB, 8.55mg/LSB sensitivity

Impact peak-level sample and hold

Programmable Event Recorder

400Hz double-pole Bessel sensor response

12-bit digital temperature sensor output

Digitally controlled sensitivity and bias

Digitally controlled sample rate, up to 4096 SPS

Dual alarm settings with programmable 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

Impact detection

Condition monitoring

Safety Systems

Shock sensor

FUNCTIONAL BLOCK DIAGRAM

Inertial

MEMS

Sensor

Self-Test

Temperature

Sensor

Signal

Conditioning

&

Conversion

Digital

Processing

Digital

Control

Aux

I/O

Alarms

Power

Management

SPI

Port

VDD

COM

AUX

DAC VREF

AUX

ADC

DIO0 DIO1

RST

CS

SCLK

DIN

DOUT

Figure 1.

GENERAL DESCRIPTION

The ADIS16204 is a programmable impact sensor in a single

compact package enabled by the Analog Devices iSensor™

integration. By enhancing the Analog Devices iMEMS® sensor

technology with an embedded signal processing solution, the

ADIS16204 provides tunable digital sensor data in a convenient

format that can be accessed using a serial peripheral interface

(SPI). The SPI interface provides access to measurements for

dual-axis linear acceleration, a root-sum-square (RSS) of both

axes, temperature, power supply, and one auxiliary analog

input. Easy access to 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 in-system offset calibration, along with convenient

sample rate control.

The ADIS16204 offers the following embedded features, which

eliminate the need for external circuitry and provide a simplified

system interface:

•

Peak sample and hold

•

Programmable Event Recording

•

Configurable trigger levels

•

Auxiliary 12-bit ADC and DAC

•

Configurable digital I/O port

•

Digital self-test function

The ADIS16204 offers two power management features for

managing system-level power dissipation: low power mode and

a configurable shutdown feature.

The ADIS16204 is available in a 9.2 mm × 9.2 mm × 3.9 mm

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

temperature range of −40°C to +105°C.