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AIS2DW12 - Robust, Low-Power Automotive Accelerometer for Secure Remote Key Fobs

AIS2DW12 - Robust, Low-Power Automotive Accelerometer
AIS2DW12 - Robust, Low-Power Automotive Accelerometer

The STMicroelectronics released the AIS2DW12 which is an ultra-low-power three-axis linear accelerometer which leverages on the robust and mature manufacturing processes already used for the production of micro-machined accelerometers and designed to address non-safety automotive applications. The new automotive accelerometer makes Passive Keyless Entry (PKE) radio fobs tough enough to survive the inevitable drops and scrapes in a lifetime of use.


The AIS2DW12 accelerometers features motion awareness making it a superior theft resistance withstanding for a long time using its ultra-low power consumption feature. This feature makes it ideal for automotive applications where vehicle owner can enjoy greater security without taking extra care of a fragile fob, and with longer battery life as a bonus. Additionally it can be applied to car key applications, Inclination / orientation detection, Motion-activated functions, Gesture recognition, Free-fall detection and Smart power saving applications. 



  • Supply voltage: 1.62 V to 3.6 V
  • Interfaces: I2C/SPI digital output interface
  • Temperature Range: From -40 °C To +85 °C
  • Package Type: 12-pad Small Thin Plastic Land Grid Array (LGA) Package 
  • Dimensions: 2mm x 2mm x 1mm
  • Buffer Type: Integrated 32-Level First-In, First-Out (FIFO) Buffer
  • Output Data Rate: From 1.6 Hz To 100 Hz
  • Power Modes: Four Different Ultra-Low-Power Modes
  • Shock Survivability: up to 10000 g



  • Independent IO supply and supply voltage compatible
  • ±2g/±4g dynamically selectable full scales
  • 2 independent programmable interrupts
  • Single data conversion on demand
  • Embedded temperature sensor


The devices are AEC-Q100 qualified, ECOPACK, RoHS and “Green” compliant and comes in LGA package. The devices are available now in a 2mm x 2mm x 1mm 12-pad Land-Grid Array (LGA) package from $1.375 for orders of 1000 pieces. 

Component Datasheet

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