BMA400

Part: BMA400 — Bosch Sensortec

Type: 3-Axis Ultra-Low Power Digital Accelerometer

Description: 12-bit digital triaxial accelerometer with selectable ±2g/±4g/±8g/±16g ranges, under 14.5 μA current consumption at highest performance, 1 KB FIFO and on-chip motion and position interrupts, in a 2 mm x 2 mm LGA package.

Operating Conditions:

• VDDIO voltage range: 1.2–3.6 V
• Output data rate: up to 800 Hz
• Acceleration ranges: ±2g/±4g/±8g/±16g

Absolute Maximum Ratings:

• Supply voltage (VDD pin): -0.3 to 3.6 V
• Supply voltage (VDDIO pin): -0.3 to 3.6 V
• Voltage at any logic pin: -0.3 to VDDIO + 0.3 V (<4 V)
• Passive storage temperature: -50 to +150 °C (≤ 65% rel. H.)
• Mechanical shock: 10,000 g (≤ 200 μs); 2,000 g (≤ 1.0 ms)
• ESD: 2 kV HBM, 500 V CDM, 200 V MM

Key Specs:

• Current consumption: < 14.5 μA at highest performance
• Step counter: overall device current consumption 4 μA
• Resolution: 12 bit
• Acceleration ranges: ±2g/±4g/±8g/±16g
• Low-pass filter bandwidth: 0.48*ODR
• Maximum output data rate: 800 Hz
• FIFO: 1 KB
• VDDIO range: 1.2 to 3.6 V

Features:

• Ultra-low power data acquisition without compromising performance
• Auto-low power and auto-wakeup
• Activity/inactivity detection
• Step counter
• Activity recognition (walking, running, standing still)
• Orientation detection
• Tap/double tap detection
• 1 KB on-chip FIFO
• SPI (4-wire, 3-wire) and I²C digital interfaces with 2 interrupt pins
• RoHS compliant, halogen-free

Applications:

• Step counting with ultra-low current consumption
• Power management for mobile applications and smart watches
• Fitness applications and activity tracking
• Tap/double tap sensing
• Drop detection for warranty logging
• Window/door measurements for climate control and alarm systems
• IoT applications powered by coin cell batteries

Package:

• LGA, 12 pins, 2 mm x 2 mm footprint, 0.95 mm height

• Small package size

LGA package (12 pins), footprint 2mm x 2mm, height 0.95 mm

• Ultra-low power

Low current consumption of data acquisition without compromising on performance (< 14.5 μA with highest performance)

• Programmable functionality

Acceleration ranges ±2g/±4g/±8g/±16g Low-pass filter bandwidths = 0.48*ODR up to a max. output data read out of 800Hz

• On-chip FIFO

Integrated FIFO on sensor with 1 KB

• On-chip interrupt features

Auto-low power/Auto wakeup Activity/In-activity Step Counter (overall device current consumption 4μA) Activity Recognition (Walking, Running, Standing still) Orientation detection Tap/double tap

• Digital interface

SPI (4-wire, 3-wire), I²C, 2 interrupt pins

VDDIO voltage range: 1.2V to 3.6V

• RoHS compliant, halogen-free

• Step Counting with ultra-low current consumption for extensive battery lifetime
• Advanced system power management for mobile applications and (smart) watches
• Fitness applications / Activity Tracking
• Tap / double tap sensing
• Drop detection for warranty logging
• Window/door measurements for climate control and alarm systems
• IoT applications powered by coin cell driven batteries, requiring <1μA and auto-wakeup functionality

Absolute maximum ratings

• Step Counting with ultra-low current consumption for extensive battery lifetime
• Advanced system power management for mobile applications and (smart) watches
• Fitness applications / Activity Tracking
• Tap / double tap sensing
• Drop detection for warranty logging
• Window/door measurements for climate control and alarm systems
• IoT applications powered by coin cell driven batteries, requiring <1μA and auto-wakeup functionality