NXP Semiconductors FXLS8961AF 3-axis MEMS accelerometer
The NXP Semiconductors FXLS8961AF 3-axis MEMS accelerometer is designed for a wide range of automotive safety and convenience applications requiring excellent offset and sensitivity stability. The device supports low-power and high-performance operating modes to maximize flexibility to meet a wide range of power requirements and resolutions for unique use cases. Several advanced integrated digital features help reduce overall system power consumption and simplify host data collection.

The NXP Semiconductors FXLS8961AF is available in a 3mmx3mmx1.25mm 12-pin QFN package with 0.65mm pitch and wettable flanks. The device is AEC-Q100 qualified and operates over the extended temperature range of -40°C to 105°C. The combination of sensor performance, system power saving features, and extended over-temperature range performance makes the FXLS8961AF an ideal accelerometer for automotive safety and convenience applications.

Features
User-selectable full-scale measurement range: ±2/4/8/16g
12-bit acceleration data
8-bit temperature sensor data
Noise as low as 230μg/√Hz (typical) in high-performance mode
Low-power capability
≤ 2μA IDD (ODR up to 6.25Hz)
< 4µA IDD (ODR up to 50Hz)
Post-board mounted zero-g offset and TCO performance of ±30mg (typical) and ±0.25mg/°C (typical), respectively
Selectable ODR from 0.78Hz to 3200Hz in low-power and high-performance modes
Flexible performance modes support custom ODR with programmable decimation (resolution) and idle time settings
144-byte output data buffer (FIFO/LIFO) capable of storing up to 32 12-bit X/Y/Z data triplets

Flexible sensor data change detection (SDCD) for motion or no motion, high-g/low-g, free fall, and other inertial events Autonomous orientation detection capability (portrait/landscape/up/down) Self-managed low-power motion detection mode with single-wire interface option 12-bit vector magnitude calculation Trigger input for synchronizing data acquisition with external systems I2C interface up to 1MHz; 3-wire and 4-wire SPI interface with clock rates up to 4MHz Bidirectional, robust self-test diagnostics: device motion or orientation does not affect results

Applications
Infotainment
Telematics Box (T-Box)
Car Alarm
Inclinometer
Door Stopper
Smart Lock