Datasheet ADXL356, ADXL357 (Analog Devices)

Low Noise, Low Drift, Low Power, 3-Axis MEMS Accelerometers Data Sheet ADXL356/ ADXL357 FEATURES FUNCTIONAL BLOCK DIAGRAMS Hermetic package offers excellent long-term stability V1P8ANA V1P8DIG RANGE 0 g offset vs. temperature (all axes): 0.75 mg /°C maximum Ultralow noise density (all axes): 80 µg /√Hz V LDO POWER SUPPLY LDO MANAGEMENT Low power, V (LDO enabled) X Y SUPPLY OUT X ADXL356 i n measurement mode: 150 µA Y ANALOG Z OUT ST1 FILTER ADXL357 i n measurement mode: 200 µA 3-AXIS ZOUT SENSOR ST2 CONTROL ADXL356/ ADXL357 i n standby mode: 21 µA LOGIC STBY ADXL356 h as user adjustable analog output bandwidth TEMP TEMP ADXL356 SENSOR VDDIO ADXL357 d igital output features
001
Digital serial peripheral interface (SPI)/limited I2C VSSIO VSS
15429-
interfaces supported
Figure 1. ADXL356
20-bit analog-to-digital converter (ADC) V1P8ANA V V 1P8DIG DDIO Data interpolation routine for synchronous sampling Programmable high- and low-pass digital filters POWER LDO MANAGEMENT VSUPPLY LDO ADXL357 Integrated temperature sensor Y ADC Voltage range options INT1 X CONTROL INT2 ADC DIGITAL LOGIC V Z ANALOG FILTER FILTER DRDY SUPPLY with internal regulators: 2.25 V to 3.6 V 3-AXIS ADC CS/SCL V SENSOR 1P8ANA, V1P8DIG with internal low dropout (LDO) regulator SCLK/VSSIO TEMP bypassed: 1.8 V typical ± 10% ADC FIFO SERIAL MOSI/SDA SENSOR I/O MISO/ASEL
002
Operating temperature range: −40°C to +125°C VSSIO VSS 14-terminal, 6 mm × 5.6 mm × 2.05 mm, LCC package, 0.26 g
15429- Figure 2. ADXL357
APPLICATIONS Inertial measurement units (IMUs)/altitude and heading reference systems (AHRSs) Platform stabilization systems Structural health monitoring Seismic imaging Tilt sensing Robotics Condition monitoring GENERAL DESCRIPTION
The analog output ADXL356 and the digital output ADXL357 The low drift, low noise, and low power ADXL357 enables are low noise density, low 0 g offset drift, low power, 3-axis accurate tilt measurement in an environment with high accelerometers with selectable measurement ranges. The vibration, such as airborne IMUs. The low noise of the ADXL356B supports the ±10 g and ±20 g ranges, the ADXL356 over higher frequencies is ideal for wireless condition ADXL356C supports the ±10 g and ±40 g ranges, and the monitoring. ADXL357 supports the ±10.24 g, ±20.48 g, and ±40.96 g ranges. The ADXL357 multifunction pin names may be referenced only The ADXL356/ADXL357 offer industry leading noise, minimal by their relevant function for either the SPI or limited I2C offset drift over temperature, and long-term stability, enabling interface. precision applications with minimal calibration. 1 Protected by U.S. Patents 8,472,270; 9,041,462; 8,665,627; 8,917,099; 6,892,576; 9,297,825; and 7,956,621.
Rev. 0 Document Feedback 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 rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2017 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications Functional Block Diagrams General Description Revision History Specifications Analog Output for the ADXL356 Digital Output for the ADXL357 SPI Digital Interface Characteristics for the ADXL357 I2C Digital Interface Characteristics for the ADXL357 Absolute Maximum Ratings Thermal Resistance Recommended Soldering Profile ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Root Allan Variance (RAV) ADXL357 Characteristics Theory of Operation Applications Information Analog Output Digital Output Axes of Acceleration Sensitivity Power Sequencing Power Supply Description VSUPPLY V1P8ANA V1P8DIG VDDIO Overrange Protection Self Test Filter Serial Communications SPI Protocol I2C Protocol Reading Acceleration or Temperature Data from the Interface FIFO Interrupts DATA_RDY DRDY Pin FIFO_FULL FIFO_OVR Activity NVM_BUSY External Synchronization and Interpolation EXT_SYNC = 00—No External Sync or Interpolation EXT_SYNC = 10—External Sync with Interpolation EXT_SYNC = 01—External Sync and External Clock, No Interpolation Filter ADXL357 Register Map Register Definitions Analog Devices ID Register Address: 0x00, Reset: 0xAD, Name: DEVID_AD Analog Devices MEMS ID Register Address: 0x01, Reset: 0x1D, Name: DEVID_MST Device ID Register Address: 0x02, Reset: 0xED, Name: PARTID Product Revision ID Register Address: 0x03, Reset: 0x01, Name: REVID Status Register Address: 0x04, Reset: 0x00, Name: Status FIFO Entries Register Address: 0x05, Reset: 0x00, Name: FIFO_ENTRIES Temperature Data Registers Address: 0x06, Reset: 0x00, Name: TEMP2 Address: 0x07, Reset: 0x00, Name: TEMP1 X-Axis Data Registers Address: 0x08, Reset: 0x00, Name: XDATA3 Address: 0x09, Reset: 0x00, Name: XDATA2 Address: 0x0A, Reset: 0x00, Name: XDATA1 Y-Axis Data Registers Address: 0x0B, Reset: 0x00, Name: YDATA3 Address: 0x0C, Reset: 0x00, Name: YDATA2 Address: 0x0D, Reset: 0x00, Name: YDATA1 Z-Axis Data Registers Address: 0x0E, Reset: 0x00, Name: ZDATA3 Address: 0x0F, Reset: 0x00, Name: ZDATA2 Address: 0x10, Reset: 0x00, Name: ZDATA1 FIFO Access Register Address: 0x11, Reset: 0x00, Name: FIFO_DATA X-Axis Offset Trim Registers Address: 0x1E, Reset: 0x00, Name: OFFSET_X_H Address: 0x1F, Reset: 0x00, Name: OFFSET_X_L Y-Axis Offset Trim Registers Address: 0x20, Reset: 0x00, Name: OFFSET_Y_H Address: 0x21, Reset: 0x00, Name: OFFSET_Y_L Z-Axis Offset Trim Registers Address: 0x22, Reset: 0x00, Name: OFFSET_Z_H Address: 0x23, Reset: 0x00, Name: OFFSET_Z_L Activity Enable Register Address: 0x24, Reset: 0x00, Name: ACT_EN Activity Threshold Registers Address: 0x25, Reset: 0x00, Name: ACT_THRESH_H Address: 0x26, Reset: 0x00, Name: ACT_THRESH_L Activity Count Register Address: 0x27, Reset: 0x01, Name: ACT_COUNT Filter Settings Register Address: 0x28, Reset: 0x00, Name: Filter FIFO Samples Register Address: 0x29, Reset: 0x60, Name: FIFO_SAMPLES Interrupt Pin (INTx) Function Map Register Address: 0x2A, Reset: 0x00, Name: INT_MAP Data Synchronization Address: 0x2B, Reset: 0x00, Name: Sync I2C Speed, Interrupt Polarity, and Range Register Address: 0x2C, Reset: 0x81, Name: Range Power Control Register Address: 0x2D, Reset: 0x01, Name: POWER_CTL Self Test Register Address: 0x2E, Reset: 0x00, Name: SELF_TEST Reset Register Address: 0x2F, Reset: 0x00, Name: Reset PCB Footprint Pattern Outline Dimensions Ordering Guide