Bosch Sensortec, Akustica

BMA280/BMA255 – for consumer electronics Bosch Sensortec launches triaxial MEMS acceleration sensors up to 14 bit resolution Now available in 2 x 2 mm LGA package

  • Detects acceleration forces as low as 0.25 milli-g
  • Integrated FIFO buffer and advanced interrupt engine
  • Complete portfolio of 6 to 14 bit sensors in 2 x 2 mm now available
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  • January 10, 2012
  • Bosch Sensortec, Akustica
  • Press releases
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press release

The new triaxial acceleration sensors BMA280 and BMA255 from Bosch Sensortec feature 14 bit and 12 bit resolutions respectively – the norm up to now has been 10 bit. With this product extension Bosch Sensortec is the only manufacturer in the world to offer a complete acceleration sensor product portfolio in 2 x 2 mm package size. The new sensors even measure very small changes in acceleration of as low as 0.25 milli-g. Currently no other 2 x 2 mm acceleration sensor features such high sensitivity while maintaining an exceptionally low noise level of only 120 micro-g/vHz and 150 micro-g/vHz respectively. The 14 bit and 12 bit resolutions place great demands on the integrated electronics, yet the sensors require only 130 micro amps even at maximum data rate. In power-saving mode, at reduced data rate, the power consumption even drops to below 10 micro amps.

Dr. Frank Melzer, CEO of Bosch Sensortec, states that this latest product innovation proves again that Bosch is the world’s leading MEMS sensor manufacturer: “The fact that these sensors are the smallest size available on the market, have the lowest power consumption and low noise levels, demonstrates Bosch’s undisputed leadership in terms of MEMS technology.”

Advanced interrupt engine
Compared with existing acceleration sensors in the 2 x 2 mm series, the BMA280 and the BMA255 have an enhanced interrupt engine. The integrated interrupt engine enables them to automatically identify specific motion patterns. Previously the interrupt engine was able to recognize tapping on the housing of a mobile device, detect falling of a device or the lifting of a cell phone from a desk. Now, both types of sensors feature the additional pattern “no motion”: this means they can detect whether the device has stopped moving for a definable period of time. The energy management system of a mobile device can use this information to switch off high-performance functions until the acceleration sensor signals a new motion.

Another new feature is a FIFO buffer. It enables the sensor to buffer measurement data independently until it is required by the system. This reduces the application processors data polling frequency and hence reduces the system’s power consumption.

Manufactured on 200 mm wafers
The new sensors, already in series production, are manufactured in Bosch’s 200 mm wafer fab in Reutlingen. This new wafer fab was set up at an investment of more than 600 million euros and complements Bosch’s existing 150 mm wafer fab. Both fabs are used in the manufacture of integrated circuits (IC) and micromechanical devices (MEMS) for use in automobile technology and in consumer electronics.

 Acceleration sensors in the 2 x 2 mm series from Bosch Sensortec
  BMA280 BMA255 BMA250 BMA222 BMA220
 Measuring ranges
 (programmable)
±2 g, ±4 g, ±8 g, ±16 g
 Digital resolution 14 Bit 12 Bit 10 Bit 8 Bit 6 Bit
 maximum resolution
 (in the measuring range ±2 g)
 0.244 Milli-g 0.98 Milli-g 3.91 Milli-g 15.63 Milli-g 62.5 Milli-g
 InterfacesSPI (3- or 4-wire) and I2C
 Number of interrupt pins 21
 Permissible operating temperature -40 °C ... +85 °C




Bosch Sensortec GmbH is a fully owned subsidiary of Robert Bosch GmbH, dedicated to the consumer electronics world offering a complete portfolio of micro-electro mechanical systems (MEMS) sensors and solutions that enable mobile devices to feel and sense the world around them. Bosch Sensortec develops and markets a wide portfolio of MEMS sensors and solutions for smart phones, tablets, wearable devices and IoTS (Internet of Things & Services) applications.

The product portfolio includes 3-axis acceleration, gyroscope and geomagnetic sensors, integrated 6- and 9-axis as well as environmental sensors and a comprehensive software portfolio. Since its foundation in 2005 Bosch Sensortec emerged as the technology leader in the addressed markets. The Bosch Group has been the global market leader for MEMS sensors since 1998 and has to date sold more than 4 billion MEMS sensors.

For more information, go to www.bosch-sensortec.com.

The Bosch Group is a leading global supplier of technology and services. In 2013, its roughly 281,000 associates generated sales of 46.1 billion euros. (NB: Due to a change in accounting policies, the 2013 figures can only be compared to a limited extent with the 2012 figures). Its operations are divided into four business sectors: Automotive Technology, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 360 subsidiaries and regional companies in some 50 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. In 2013, the Bosch Group invested some 4.5 billion euros in research and development and applied for some 5,000 patents. This is an average of 20 patents per day. The Bosch Group's products and services are designed to fascinate, and to improve the quality of life by providing solutions which are both innovative and beneficial. In this way, the company offers technology worldwide that is "Invented for life."

Further information is available online at www.bosch.com and www.bosch-press.com, http://twitter.com/BoschPresse.

PI7562 - January 10, 2012

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