Overview
The BMA400 is an ultra-low power, triaxial acceleration sensor designed by Bosch Sensortec, a leading manufacturer of microelectromechanical systems (MEMS) sensors. This sensor is part of the broader category of Other Signal Circuits and is distinguished by its precise acceleration detection in three dimensions, making it ideal for applications requiring small form factor sensors with minimal power draw. The BMA400 operates over a wide range of supply voltages from 1.72 V to 3.6 V, with a nominal voltage of 1.8 V, and supports a broad operating temperature range from -40 °C to 85 °C. It is also compliant with critical industry standards such as RoHS and REACH, ensuring its suitability for global markets.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | LGA-12 (2x2 mm) |
| Dimensions | 2 mm x 2 mm x 0.95 mm |
| Supply Voltage | 1.72 V to 3.6 V (nominal: 1.8 V) |
| Operating Temperature | -40 °C to 85 °C |
| Measurement Range | ±2g, ±4g, ±8g, ±16g |
| Current Consumption | 14 μA (highest performance), 1 μA and below (ultra-low power self-wake-up mode) |
| Noise Density | 180 μg/√Hz |
| Compliance | RoHS and REACH compliant |
Key Features
- Ultra-low Power Consumption: The BMA400 is designed to minimize power consumption, drawing as low as 1 μA in ultra-low power self-wake-up mode, significantly extending battery life in wearable and IoT devices.
- Intelligent Power Management: The sensor can automatically wake up when it detects motion and return to sleep mode when the movement ends, reducing the need to wake the main application processor and thus saving battery power.
- Built-in Step Counter and Activity Recognition: The BMA400 includes embedded plug-and-play step counting and activity recognition features, which use only 4 μA, making it highly efficient for wearable applications.
- Flexible Device Tuning: The sensor offers flexible tuning for power consumption, noise, and output data rate (ODR) parameters, allowing for customized performance based on application needs.
- Compact Size: With dimensions of only 2.0 x 2.0 x 0.95 mm³, the BMA400 is ideal for compact electronic systems and new types of wearables.
Applications
- Consumer Electronics: The BMA400 is suitable for portable devices like smartwatches and fitness trackers, enabling features such as step counting, fall detection, and activity recognition while optimizing battery life.
- Internet of Things (IoT): It can be integrated into IoT devices for home automation, such as smart lighting systems, to detect room occupancy or activity levels, allowing for more intelligent energy-saving measures.
- Transportation and Logistics: The sensor can be used in vehicle tracking and telematics systems to monitor the condition of goods in transit by detecting undue vibrations or impacts).
- Smart Cities: The BMA400 can also be applied in various smart city applications, including smart home systems and security systems, to enhance functionality and efficiency).
Q & A
- What is the BMA400 sensor?
The BMA400 is an ultra-low power, triaxial acceleration sensor designed by Bosch Sensortec for precise acceleration detection in three dimensions).
- What are the key features of the BMA400?
The BMA400 features ultra-low power consumption, intelligent power management, built-in step counting and activity recognition, flexible device tuning, and a compact size).
- What is the operating voltage range of the BMA400?
The BMA400 operates over a supply voltage range from 1.72 V to 3.6 V, with a nominal voltage of 1.8 V).
- What are the typical applications of the BMA400?
The BMA400 is typically used in consumer electronics like smartwatches and fitness trackers, IoT devices for home automation, transportation and logistics, and smart city applications).
- How does the BMA400 manage power consumption?
The BMA400 manages power consumption through intelligent power management, automatically waking up when it detects motion and returning to sleep mode when the movement ends, thus reducing battery consumption).
- What is the current consumption of the BMA400 in its highest performance mode?
The current consumption of the BMA400 in its highest performance mode is 14 μA).
- Is the BMA400 compliant with industry standards?
Yes, the BMA400 is compliant with RoHS and REACH standards, ensuring its suitability for global markets).
- What is the measurement range of the BMA400?
The measurement range of the BMA400 is ±2g, ±4g, ±8g, and ±16g).
- What award has the BMA400 received?
The BMA400 was honored with the CES 2018 Innovation Award in the category of Embedded Technologies).
- How does the BMA400 contribute to extending battery life in wearable devices?
The BMA400 significantly extends battery life in wearable devices through its ultra-low power consumption and intelligent power management features, such as automatic wake-up and sleep modes).
