Programmable High-g Digital

Impact Sensor and Recorder

ADIS16204

Rev. 0

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FEATURES

Dual-axis sensing, ±70 g, ±37 g

14-bit resolution

Impact peak-level sample and hold

RSS output

Programmable event recorder

400 Hz double-pole Bessel sensor response

Digitally controlled sensitivity and bias

Digitally controlled sample rate, up to 4096 SPS

Programmable condition monitoring alarms

Auxiliary digital I/O

Digitally activated self-test

Embedded temperature sensor

Programmable power management

SPI-compatible serial interface

Auxiliary 12-bit ADC input and DAC output

Single-supply operation: +3.0 V to +3.6 V

4000 g powered shock survivability

APPLICATIONS

Crash or impact detection

Condition monitoring of valuable goods

Safety, shut-off sensing

Impact event recording

Security sensing, tamper detection

FUNCTIONAL BLOCK DIAGRAM

SCLK

DIN

DOUT

CS

RST

DIO1 DIO2

SPI

PORT

TEMPERATURE

SENSOR

SELF-TEST

POWER

MANAGEMENT

AUXILIARY

I/O

EVENT

CAPTURE

BUFFER

MEMORY

ALARMS

DIGITAL

CONTROL

SIGNAL

CONDITIONING

AND

CONVERSION

DIGITAL

PROCESSING

ADIS16204

VDD

COM

AUX

ADC

AUX

DAC VREF

INERTIAL

MEMS

SENSOR

Figure 1.

GENERAL DESCRIPTION

The ADIS16204 is a fully-contained programmable impact

sensor 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 ADIS16204 provides tunable digital

sensor data in a convenient format that can be accessed using

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

measurements for dual-axis linear acceleration, a root sum

square (RSS) of both axes, temperature, power supply, an

auxiliary analog input, and an event capture buffer memory. Easy

access to digital sensor data provides users 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 bias null/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 (dual, 1K × 16 bit)

•

RSS output (total shock in the X-Y plane)

•

Configurable alarms

•

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 tem-

perature range of −40°C to +105°C.