What the 57 mV/g sensitivity and bandwidth mean for your measurement
The ADXL316WBCSZ is a 3-axis analog accelerometer from Analog Devices' Automotive series, outputting analog voltage proportional to acceleration on X, Y, and Z axes. Its 57 mV/g sensitivity means that at 1 g of acceleration, the output voltage shifts by 57 mV from the zero-g offset — a direct, ratiometric reading that simplifies ADC scaling without digital protocol overhead. Bandwidth is 1.6 kHz on the X and Y axes and 550 Hz on the Z axis — the Z channel is intentionally slower to filter out high-frequency vibration that can alias into low-frequency tilt or shock measurements. The adjustable bandwidth feature lets you add an external capacitor to lower the corner frequency further, trading response time for noise reduction in applications like structural monitoring or gesture detection.
Package, mounting, and board integration
Housed in a 12-LFCSP-SS (4x4 mm) package with an exposed pad and wettable flank terminals — the wettable flank allows automated optical inspection (AOI) of solder joints after reflow, a requirement for automotive-grade assembly. The surface-mount footprint with wettable flank means the part is compatible with standard lead-free reflow profiles and does not require manual inspection of hidden solder joints. The standby mode feature allows the accelerometer to be placed into a low-power sleep state, drawing minimal current when no motion is expected — useful for battery-powered or ignition-off sensing in vehicle telematics units. The adjustable bandwidth and standby mode together give the designer control over the power-vs-response trade-off without changing the BOM.