Description

The AIS25BA is an ultralow noise, low latency, wide bandwidth, 3-axis digital

accelerometer with a dedicated TDM interface designed to address automotive nonsafety

applications, in particular, wideband active noise control (ANC) and vibration

monitoring.

The AIS25BA has a user-selectable full-scale range of ±3.85/±7.7 g, a time-division

multiplexing (TDM) interface for the sensor data, and an I²C interface for device

configuration.

The AIS25BA is available in a small thin plastic land grid array package (LGA) and is

guaranteed to operate over an extended temperature range from -40 °C to +125 °C.

Features

• AEC-Q100 qualified

• 3-axis accelerometer with user-selectable full-scale: ±3.85/±7.7 g

• Wide and flat frequency response: from dc up to 2.4 kHz (typ)

• Low latency (entire reading chain): 266 μs @ 2 kHz (typ)

• Ultralow noise density (typ: 30 μg/√Hz for X and Y axes; 50 μg/√Hz for Z-axis)

• TDM (8/16/24 kHz) slave interface for sensor data and I²C interface for

configuration

• Supply voltage: 1.71 V to 2.1 V

• Extended temperature range from -40 °C to +125 °C

• Embedded self-test

• Compact package: LGA 2.5 x 2.5 x 0.86 mm 14-lead

• 10000 g high shock survivability

• Lead-free, ECOPACK and RoHS compliant

Applications

• Wideband active noise control (ANC)

• Vibration monitoring