BMA020

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BMA020

+BOM

ACCELEROMETER 2-8G I2C/SPI 12LGA

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  • メーカー品番 #BMA020

  • 在庫状況5246

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仕様

属性 値
Part Status Obsolete
Base Product Number BMA020
Type Digital
Axis X, Y, Z
Acceleration Range ±2g, 4g, 8g
Sensitivity (LSB/g) 256 (±2g) ~ 64 (±8g)
Bandwidth 25Hz ~ 750Hz
Output Type I2C, SPI
Voltage - Supply 2V ~ 3.6V
Features Adjustable Bandwidth, Selectable Scale, Sleep Mode
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package 12-VFLGA
Supplier Device Package 12-LGA (3x3)
Packaging Tape & Reel (TR)

概要

Description

BMA020 is a Bosch Sensortec tri-axial MEMS accelerometer with digital output. It measures acceleration along X, Y, and Z and streams data over I2C or SPI to a microcontroller. Designed for low power in mobile and wearable devices, it comes in a small package with configurable data rates.
Key features (typical): low-noise sensing, programmable full‑scale range, programmable output data rate, power-down and wake-up modes, and optional interrupt outputs for motion events. It enables basic motion/orientation sensing for activity detection, screen orientation, tilt, and simple gesture input in compact devices.
How to use: provide power, choose interface (I2C/SPI), configure registers for the desired data rate and range, read axis data from the data registers, and calibrate as needed.
Note: Always consult the official BMA020 datasheet for exact electrical specs, pinout, and register details.

Equivalent

Direct equivalents (3-axis digital accelerometers with I2C/SPI and similar footprint):
- Bosch: BMA250, BMA280
- ST: LIS3DH, LIS2DH12
- Analog Devices: ADXL345
- NXP: MMA8452Q (or MMA8451Q)
Note: exact choice depends on range, voltage, data rate, and package.

Features

Here are concise features of the BMA020:
- 3-axis MEMS accelerometer
- Digital output via I2C and SPI
- Supply voltage: 1.8–3.6 V
- Ultra-low power with multiple power modes (including sleep)
- Programmable data rate (ODR) and full-scale range
- 12-bit (digital) output resolution
- On‑chip temperature sensor and self-test
- Interrupts for data-ready, activity, wake-up, etc.
- Small package suitable for mobile/embedded applications
- Wide operating temperature range (typical industrial temp specs)

Pinout

- Pin count: 8 pins (common LGA 2×2 mm package)
- Function: Bosch BMA020 is a 3‑axis digital MEMS accelerometer with a digital output
- Interface: I2C (SCL, SDA) with address selection via SDO/ADR
- Power: VDD and GND
- Interrupts: INT1 and INT2 (interrupt outputs)
- Other: RESET (often provided in package) depending on variant; exact pinout may vary by package version
Note: Always check the specific datasheet/package variant for the exact pin assignments.

Manufacturer

Manufacturer: Bosch Sensortec, a MEMS sensor division of Bosch.
What kind of company: It’s part of Robert Bosch GmbH, a German multinational engineering and electronics company that designs and manufactures technology products, including MEMS sensors for consumer electronics, automotive, and industrial markets.

Application

BMA020 is Bosch Sensortec’s 3-axis accelerometer. Common application areas:
- Mobile devices and wearables: screen orientation, gesture recognition, activity/step counting
- Gaming, AR/VR input and remote controllers
- Automotive: tilt/impact sensing for safety and rollover detection
- Industrial/IoT: vibration monitoring, machine health sensing, asset tracking
- Robotics and drones: attitude estimation, stabilization, navigation support
- Smart home and consumer electronics: motion-triggered controls and energy management
These cover core inertial sensing needs in portable, automotive, industrial, and smart systems.

Package

BMA020 uses a land-grid array (LGA) package, typically a 3×3 mm LGA with 16 pins (LGA-16).

Frequently Asked Questions


Q: What is the key advantage of this BMA020 accelerometer over newer parts?
A: It offers flexible, selectable acceleration ranges (±2g, 4g, 8g) and multiple bandwidth options (25Hz–750Hz), ideal for low-power, legacy sensor fusion designs.


Q: Does this sensor support both I2C and SPI interfaces?
A: Yes, the digital output supports both I2C and SPI communication protocols, providing design flexibility for various microcontroller interfaces.


Q: What is the sensitivity for the ±2g range?
A: In the ±2g range, sensitivity is 256 LSB/g; it scales down to 64 LSB/g for the ±8g range for higher dynamic range measurements.


Q: Can this component operate in low-power battery applications?
A: Yes, it includes a sleep mode and operates from 2V to 3.6V, making it suitable for portable, battery-constrained device designs.


Q: What is the operating temperature range for the BMA020?
A: It is specified for industrial-grade operation from -40°C to +85°C, ensuring reliable performance in harsh environments.


Q: Is the BMA020 suitable for wearable or vibration monitoring?
A: Yes, with configurable bandwidth (25Hz–750Hz), selectable scale, and compact 12-LGA (3x3mm) package, it fits wearable and condition monitoring applications.


Q: What is the package type and footprint of this device?
A: It comes in a 12-VFLGA package with a 3x3mm body (12-LGA supplier package), surface-mount suitable for space-constrained PCBs.


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