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