Programmable High-g Digital Impact Sensor and Recorder ADIS16204 FUNCTIONAL BLOCK DIAGRAM FEATURES AUX AUX ADC DAC VREF Dual-axis sensing, 70 g, 37 g 14-bit resolution ADIS16204 TEMPERATURE Impact peak-level sample-and-hold SENSOR RSS output INERTIAL CS SIGNAL Programmable event recorder MEMS CONDITIONING DIGITAL SENSOR SCLK AND PROCESSING 400 Hz double-pole Bessel sensor response SPI CONVERSION PORT DIN Digitally controlled sensitivity and bias DIGITAL SELF-TEST Digitally controlled sample rate, up to 4096 SPS DOUT CONTROL Programmable condition monitoring alarms VDD POWER AUXILIARY EVENT ALARMS Auxiliary digital I/O MANAGEMENT I/O CAPTURE BUFFER MEMORY Digitally activated self-test COM Embedded temperature sensor RST DIO1 DIO2 Programmable power management Figure 1. 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 GENERAL DESCRIPTION The ADIS16204 is a fully-contained programmable impact The ADIS16204 offers the following embedded features, which sensor in a single compact package enabled by the Analog eliminate the need for external circuitry and provide a simplified Devices, Inc. iSensor integration. By enhancing the Analog system interface: Devices iMEMS sensor technology with an embedded signal Peak sample-and-hold processing solution, the ADIS16204 provides tunable digital Programmable event recording (dual, 1K 16 bit) sensor data in a convenient format that can be accessed using RSS output (total shock in the XY plane) a serial peripheral interface (SPI). The SPI provides access to measurements for dual-axis linear acceleration, a root sum Configurable alarms square (RSS) of both axes, temperature, power supply, an Auxiliary 12-bit ADC and DAC auxiliary analog input, and an event capture buffer memory. Easy Configurable digital I/O port access to digital sensor data provides users with a system-ready Digital self-test function device, reducing development time, cost, and program risk. The ADIS16204 offers two power management features for Unique characteristics of the end system are accommodated managing system-level power dissipation: low power mode easily through several built-in features, such as a single command and a configurable shutdown feature. in-system bias null/offset calibration, along with convenient sample rate control. 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 40C to +105C. Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 20072009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. OBSOLETE 06448-001ADIS16204 TABLE OF CONTENTS Features .............................................................................................. 1 Impact/Shock Response ............................................................ 10 Applications ....................................................................................... 1 Auxiliary ADC Function ........................................................... 11 Functional Block Diagram .............................................................. 1 Basic Operation .............................................................................. 12 General Description ......................................................................... 1 Serial Peripheral Interface ......................................................... 12 Revision History ............................................................................... 2 Data Output Register Access .................................................... 13 Specif icat ions ..................................................................................... 3 Programming and Control ............................................................ 14 Timing Specifications .................................................................. 5 Control Register Overview ....................................................... 14 Absolute Maximum Ratings ............................................................ 6 Control Register Structure ........................................................ 14 ESD Caution .................................................................................. 6 Global Commands ..................................................................... 15 Pin Configuration and Function Descriptions ............................. 7 C a l ibr at ion ................................................................................... 15 Recommended Pad Geometry .................................................... 7 Operational Control ................................................................... 16 Typical Performance Characteristics ............................................. 8 Status and Diagnostics ............................................................... 17 Theory of Operation ...................................................................... 10 Alarm Detection and Event Capture ....................................... 18 O ver vie w ...................................................................................... 10 Second-Level Assembly ................................................................. 21 Acceleration Sensor .................................................................... 10 Outline Dimensions ....................................................................... 22 Temperature Sensor ................................................................... 10 Ordering Guide .......................................................................... 22 REVISION HISTORY 12/09Rev. A to Rev. B Changes to Figure 23 ...................................................................... 13 10/07Rev. 0 to Rev. A Changes to Power Supply Current Specification .......................... 4 Changes to Overview Section ....................................................... 10 6/07Revision 0: Initial Version Rev. B Page 2 of 24 OBSOLETE