Stuttgart, Germany - The BMA220 digital sensor from Bosch Sensortec is, according to the company, the smallest digital acceleration sensor in LGA housing in the world, measuring only 2 mm x 2 mm x 0.98 mm, including LGA housing, a 55% reduction in surface area over current 3 x 3 LGA housings.
The BMA220 is a triaxial g-sensor with digital data output, four programmable measuring ranges from 2 g to 16 g, and integrated evaluation electronics for recognizing specific motion patterns.
For use in pedometers (step counters), Bosch Sensortec wrote specific evaluation algorithms tailored to the BMA220, a service that substantially shortened development time for the end device. Other applications include 3D spatial orientation in mobile telephones, PDAs and game controllers, as well as targeted reactions to movements, such as the ability to mute a ring tone by tapping twice on the mobile phone.
The evaluation electronics integrated in the sensor obsoletes the need for intensive signal evaluation by the host application's microcontroller. This greatly reduces energy use in the mobile device and significantly extends battery life.
In the BMA220, the algorithms for motion recognition run internally on an ASIC; therefore, the sensor can autonomously and automatically distinguish between a random movement, a change in its spatial position, a single tap, double taps, and between slow and fast changes in movement. The motion recognition parameters can be programmed by the customer.
The sensor signals the availability of new data at the interrupt output; at the same time, the sensor also outputs them in conditioned form to the digital interface. This means that end product developers no longer have to grapple with complex raw 3-axis acceleration data from the internal micromechanical readings recorder.
For more information visit www.bosch-sensortec.com.