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Data sheet

BMA220

Page 13

BST-BMA220-DS003-08 | Revision 1.15 | August 2011 Bosch Sensortec

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.

4.2.2 Filter and bandwidth configuration

The BMA220 has a digital filter that can be configured by setting the corresponding register bits

filter_config[3:0] at address 0x10 (SPI) / 0x20 (I

C). For compatibility reasons the settings

are defined based on BMA120. To always ensure an ideal cut off frequency of the filter the

BMA220 is adjusting the sample rate automatically.

Table 6: Digital filter configuration

filter_config[3:0]

0x5 0x4 0x3 0x2 0x1 0x0

digital filter cut-off frequency

32Hz 64Hz 125Hz 250Hz 500Hz 1kHz

The internal SC-filter has a fix cut-off frequency at 1 KHz. In addition to the internal SC-filter a

digital filter is available which is providing a filtered and an unfiltered data stream for all of the 3

axes of acceleration.

If application specific reasons require a bandwidth configuration <32Hz, please contact your

Bosch Sensortec representative.

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Bosch MAN-REG-X-08 Spezifikationen Seite 13