MEMS Motion Sensing Accelerometers

KXSS5 SERIES

Tri-axis, 2.5g - 8g, Digital (I²C or SPI), 3x5x0.9mm LGA: These high-performance silicon micromachined linear accelerometers and inclinometers consist of a sensor element and an ASIC packaged in a 3x5x0.9mm Land Grid Array (LGA). The sensor element is fabricated from single-crystal silicon with proprietary Deep Reactive Ion Etching (DRIE) processes, and is protected from the environment by a hermetically-sealed silicon cap at the wafer level.; The KXSS5 series is designed to provide a high signal-to-noise ratio with excellent performance over temperature. These sensors can accept supply voltages between 1.8V and 5.25V. Sensitivity is factory programmable allowing customization for applications requiring from ±2.5g to ±8.0g ranges. Sensor bandwidth is user-definable. Interrupts can be generated for acceleration on any axis above a threshold value (Motion Interrupt) or for acceleration on all three axes below a threshold value (Free-fall Interrupt).; The sensor element functions on the principle of differential capacitance. Acceleration causes displacement of a silicon structure resulting in a change in capacitance. An ASIC, using a standard CMOS manufacturing process, detects and transforms changes in capacitance into an analog output voltage, which is proportional to acceleration. This voltage is digitized by an on-board A/D converter and is accessed via an inter-integrated circuit (I²C) bus or serial peripheral interface (SPI).

Product	Range(g)	Sensitivity	Offset Counts	Operating Voltage(V)	Output	Temperature(°C)	Package
KXSS5-2057	3	546 (mV/g)	2048	3.3	I²C, SPI, Analog	-40 to +85	3x5x0.9 LGA
KXSS5-3028	3	546 (mV/g)	2048	2.8	I²C, SPI, Analog	-40 to +85	3x5x0.9 LGA
KXSS5-4457	3	546 (mV/g)	2048	1.8	I²C, SPI, Analog	-25 to +70	3x5x0.9 LGA