BMA456

Overview

The BMA456 is a digital triaxial acceleration sensor designed for wearable applications. It features a 12-pin LGA (2x2 mm) package and supports I2C and SPI interfaces. The device operates on a supply voltage of 1.62 V to 3.6 V and includes an integrated temperature sensor. Acceleration ranges are selectable at ±2g, ±4g, ±8g, and ±16g with sensitivities of 2048, 4096, 8192, and 16384 LSB/g respectively. The bandwidth spans from 5.06 Hz to 684 Hz. Operating temperatures range from -40°C to +85°C.

Feature Summary

• Intelligent on-chip motion-triggered interrupt functionality
• Integrated step-counter for activity tracking
• Configurable low-pass filter and adjustable bandwidth

Applications

• Wearable devices
• Activity tracking systems
• Consumer electronics requiring low-power sensing

Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to confirm interface type and packaging configuration. Confirm RoHS compliance status and lead times directly with authorized distributors. Ensure the selected variant matches the required acceleration range and sensitivity settings for the target application design.

Selection Notes

Select the BMA456 for designs requiring ultra-small form factors and low power consumption in consumer electronics. Evaluate the available acceleration ranges to ensure sufficient dynamic range for the intended motion detection tasks. Consider the integrated step-counter feature if activity monitoring is a primary requirement for the end product.

Part Context

The BMA456 belongs to Bosch Sensortec’s portfolio of MEMS acceleration sensors. It is engineered specifically for high-performance requirements in space-constrained wearable devices. The component integrates advanced signal processing capabilities within a minimal footprint to support modern mobile and health-focused electronic applications.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation. Consult official Bosch Sensortec resources for cross-reference information or alternative sensor selections.

FAQ

What communication interfaces does the BMA456 support?

The BMA456 supports both I2C and SPI digital communication interfaces.

Is the BMA456 suitable for activity tracking?

Yes, the BMA456 includes an integrated step-counter and is optimized for wearable applications such as activity tracking.