PART NUMBER: KXTJ3-1057 2g / 4g / 8g / 16g Tri-axis Digital Rev. 4.0 Accelerometer Specifications 05-Oct-2018 Product Description The KXTJ3-1057 is a tri-axis 2g, 4g, 8g, or 16g silicon micromachined accelerometer. The sense element is fabricated using Kionixs proprietary plasma micromachining process technology. Acceleration sensing is based on the principle of a differential capacitance arising from acceleration-induced motion of the sense element, which further utilizes common mode cancellation to decrease errors from process variation, temperature, and environmental stress. The sense element is hermetically sealed at the wafer level by bonding a second silicon lid wafer to the device using a glass frit. A separate ASIC device packaged with the sense element provides signal conditioning and digital communications. The accelerometer is delivered in a 2 x 2 x 0.9 mm LGA plastic package operating from a 1.71V 3.6V DC supply. Voltage regulators are used to maintain constant internal operating voltages over the range of input supply voltages. This results in stable operating characteristics over the range of input supply voltages and virtually 2 undetectable ratiometric error. The I C digital protocol is used to communicate with the chip to configure the part and monitor outputs. Features Small footprint: 2 x 2 x 0.9 mm LGA 12-pin package (pin-to-pin compatible with KXTJ2) Low current consumption: 0.9 A in standby, 10 A in Low Power, and 155 A in High Resolution modes Extended user-configurable g-ranges: 2g, 4g, 8g, 16g 8-bit, 12-bit, and 14-bit resolution modes Wide supply voltage range: 1.71V 3.6V with internal voltage regulator High resolution Wake-Up function with threshold configurable down to 3.9 mg User-configurable Output Data Rates from 0.781Hz to 1600Hz 2 I C digital communication interface up to 3.4MHz Highly configurable interrupt control Embedded Low Pass filter Improved design to virtually eliminate post reflow offset and sensitivity shifts Improved noise performance Stable performance over temperature High shock survivability Self-test function RoHS / REACH compliant 36 Thornwood Dr. Ithaca, NY 14850 2018 Kionix All Rights Reserved tel: 607-257-1080 fax:607-257-1146 833-11887-1810051249-0.34 www.kionix.com - info kionix.com Page 1 of 43 PART NUMBER: KXTJ3-1057 2g / 4g / 8g / 16g Tri-axis Digital Rev. 4.0 Accelerometer Specifications 05-Oct-2018 Table of Contents PRODUCT DESCRIPTION .............................................................................................................................................................. 1 FEATURES ................................................................................................................................................................................... 1 TABLE OF CONTENTS ................................................................................................................................................................... 2 FUNCTIONAL DIAGRAM .............................................................................................................................................................. 4 PRODUCT SPECIFICATIONS .......................................................................................................................................................... 5 MECHANICAL .................................................................................................................................................................................. 5 ELECTRICAL ..................................................................................................................................................................................... 6 Start Up Time Profile .................................................................................................................................................................. 7 Current Profile ............................................................................................................................................................................ 8 Power-On Procedure .................................................................................................................................................................. 9 ENVIRONMENTAL ......................................................................................................................................................................... 10 Handling, Mounting, Soldering................................................................................................................................................. 10 Floor Life ................................................................................................................................................................................... 10 TERMINOLOGY .............................................................................................................................................................................. 11 g ................................................................................................................................................................................................ 11 Sensitivity ................................................................................................................................................................................. 11 Zero-g offset ............................................................................................................................................................................. 11 Self-test..................................................................................................................................................................................... 11 FUNCTIONALITY ............................................................................................................................................................................ 12 Sense element .......................................................................................................................................................................... 12 ASIC interface ........................................................................................................................................................................... 12 Factory calibration ................................................................................................................................................................... 12 APPLICATION SCHEMATIC ............................................................................................................................................................. 13 PIN DESCRIPTION .......................................................................................................................................................................... 13 PACKAGE DIMENSIONS AND ORIENTATION ................................................................................................................................. 14 Dimensions ............................................................................................................................................................................... 14 Orientation ............................................................................................................................................................................... 15 DIGITAL INTERFACE ................................................................................................................................................................... 19 2 I C SERIAL INTERFACE ................................................................................................................................................................... 19 2 I C OPERATION .............................................................................................................................................................................. 20 WRITING TO AN 8-BIT REGISTER ................................................................................................................................................... 21 READING FROM AN 8-BIT REGISTER ............................................................................................................................................. 22 DATA TRANSFER SEQUENCES ....................................................................................................................................................... 23 HS-MODE ...................................................................................................................................................................................... 24 2 I C TIMING DIAGRAM.................................................................................................................................................................... 25 EMBEDDED REGISTERS.............................................................................................................................................................. 26 REGISTER DESCRIPTIONS........................................................................................................................................................... 27 ACCELEROMETER OUTPUTS .......................................................................................................................................................... 27 36 Thornwood Dr. Ithaca, NY 14850 2018 Kionix All Rights Reserved tel: 607-257-1080 fax:607-257-1146 833-11887-1810051249-0.34 www.kionix.com - info kionix.com Page 2 of 43