Bosch BMA425 3-Axis Accelerometer, Ultra-Low Power, Step Counter & Activity Recognition, I²C/SPI, LGA-12
The Bosch BMA425 is a 12-bit digital 3-axis accelerometer designed for ultra-low-power wearable and motion-tracking applications. It features programmable ranges from ±2g to ±16g, integrated step counting, activity recognition, and supports I²C/SPI communication for easy integration with microcontrollers like Arduino, ESP32, and STM32.
Features
- Ultra-low power consumption down to 3.5µA in suspend mode for extended battery life.
- Integrated intelligent features: step counter, activity recognition (running/walking/still), and tap detection.
- Programmable full-scale ranges: ±2g, ±4g, ±8g, and ±16g with 12-bit resolution.
- Dual digital interfaces: I²C and SPI (3/4 wire) with dedicated interrupt pins.
- Compact LGA-12 package (2x2x0.95mm) with built-in 1KB FIFO for efficient data buffering.
Out of stock
The Bosch BMA425 is a MEMS-based triaxial acceleration sensor engineered for precision motion sensing in power-constrained environments. Its 12-bit digital output provides high-resolution data across four user-selectable full-scale ranges, enabling sensitivity from fine gestures to high-impact activities. The sensor’s intelligent on-chip processing offloads common motion algorithms like step counting and activity classification from the host microcontroller, significantly reducing system power consumption.
Communication is handled via a flexible I²C or SPI interface, with a VDDIO range independent of the core supply voltage for easy level-shifting. The integrated 1KB FIFO allows for efficient batch data reading, minimizing host processor wake-ups. With an operating temperature range of -40°C to +85°C and robust performance characteristics, the BMA425 is built for reliable operation in fitness trackers, smartwatches, and IoT motion-logging devices.
Additional Information
| Weight | 0.005 kg |
|---|---|
| Dimensions | 2 × 2 × 0.95 cm |
