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High Performance Automotive Grade2 3-Axis Accelerometer

The IAM-20381HT is a grade-2 3-axis accelerometer for Automotive non-safety applications, housed in a thin 3 × 3 × 0.75 mm³ (16-pin LGA) package. It also features a 4096-byte FIFO that can lower the traffic on the serial bus interface and reduce power consumption by allowing the system processor to burst read sensor data and then go into a low-power mode. IAM-20381HT, with its 3-axis integration, enables manufacturers to eliminate the costly and complex selection, qualification, and system level integration of discrete devices, guaranteeing optimal motion performance.

The accelerometer has a user-programmable full-scale range of ±2g, ±4g, ±8g and ±16g. Factory-calibrated initial sensitivity of sensors reduces production-line calibration requirements.

Other industry-leading features include on-chip 16-bit ADCs, programmable digital filters, an embedded temperature sensor, and two programmable interrupts. The device features I²C and SPI serial interfaces, a VDD operating range of 1.71V to 3.6V, and a separate digital IO supply, VDDIO from 1.71V to 3.6V.


Target Applications

  • Lift Gate Motion Detection
  • Tilt measurement
  • Infotainment and Navigation Systems
  • Car Alarm
  • Telematics
  • Insurance Vehicle Tracking
  • Drive Style Recording

Product Details

ProductPackage Size
Accel Full Scale Range
Accel Sensitivity
Digital Output
Logic Supply Voltage
Operating Voltage

3 × 3 × 0.75±2
I²C or SPIVDD1.71 – 3.6

MCU board for motion sensor evaluation. Compatible with 3-axis gyroscopes, 3-axis accelerometers, and 6-axis Inertial Measurement Units (IMUs)

Documentation & Resources

Datasheet / Product BriefVersionUpdatedDownload
DS-000559 – IAM-20381HT Datasheet1.02023-11-24Datasheet

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