High Performance Automotive Accelerometer
The IAM-20381 is a 3-axis MotionTracking accelerometer for Automotive applications in a small 3 × 3 × 0.75 mm³ (16-pin LGA) package. It also features a 512-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-20381, 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 accelerometer full-scale range of ±2g, ±4g, ±8g, and ±16g. Factory-calibrated initial sensitivity of both sensors reduces production-line calibration requirements.
Other industry-leading features include on-chip 16-bit ADCs, programmable digital filters, an embedded temperature sensor, and 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.
|Gyro Full Scale Range|
|Gyro Rate Noise|
|Accel Full Scale Range|
|Digital Output||Logic Supply Voltage|
|3 × 3 × 0.75||±2|
|I²C or SPI||VDD||1.71 – 3.6|
High performance 6-axis IMUs enhance positioning systems when GPS/GNSS signal is not available or reliable. Gyroscope and accelerometer outputs are fused to determine vehicle position even in multi-level parking or tunnels.
The accelerometer enables crash detection which can trigger emergency calls, and the gyroscope allows for vehicle positioning and driving style analysis.
6-axis IMU sensors enable advanced features and deliver a superior user navigation experience.
|Part #||Accel Full Scale Range||Accel Sensitivity||Digital Output||Logic Supply Voltage||Operating Voltage Supply||Package Size|
|±2, ±4, ±8, ±16||
|I2C or SPI||VDD||1.71V–3.6V||3x3x0.75|