Specifications

Data sheet
BMA220
Page 52
BST-BMA220-DS003-08 | Revision 1.15 | August 2011 Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
In order to prevent noise on the supply pins V
DDA
, V
DDD
and V
DDIO
it is recommended to use low-
leakage blocking capacitors with 100nF. The capacitors should be placed close to the
respective pins as shown in figure 27.
V
DDD
, V
DDA
and V
DDIO
can be connected according to the given diagrams, also to one common
power supply within the specified range as long as the following requirement is met:
 For V
DDA
the voltage noise level must not exceed 100mVpp for signals below 1kHz and
must not exceed 10mVpp for signals above 1kHz.
In case SPI communication is used, it is recommended to apply a connection in accordance
with diagrams as shown in setup 1, setup 3 or setup 4.