BMA145 datasheet(13/26 Pages) BOSCH

13 / 26 page

BMA145

Data sheet

Bosch Sensortec

Rev. 1.3

Page 13 / proprietary information

11 February 2010

as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

approximately +0.25g for X and Y and +0.5g for Z axis (nominal value). For the ±4g acceleration

range this corresponds to a typical output signal delta of ∆Uoutnom [v] = (VDD [v] / 10) x 0.25 for X

and Y and ∆Uoutnom [v] = (VDD [v] / 10) x 0.5 for Z, to be added as a static voltage offset to the

current output signal Xout, Yout and Zout. The self test response remains as a static offset on

the X, Y, Z and AMUX output as long as the self test activation input pin is not set back to logic

Simplified, while the self test is activated, any acceleration or gravitational force applied to the

sensor will be observed in the output signal as a superposition of both acceleration and self test

signal.

Self Test Response

Output Signal [LSB]

Self Test Activation Bit

Self Test Activation Pin

Output Signal [V]

BMA145 Datasheet(PDF) 13 Page - Bosch Sensortec GmbH