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PDF BMA220 Data sheet ( Hoja de datos )
| Número de pieza | BMA220 | |
| Descripción | triaxial acceleration sensor | |
| Fabricantes | Bosch | |
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Data sheet
BMA220
Digital, triaxial acceleration sensor
Bosch Sensortec
BMA220: Data sheet
Document revision
Document release date
Document number
Technical reference code(s)
Notes
1.15
23 August 2011
BST-BMA220-DS003-08
0 273 141 102
Data in this document are subject to change without notice. Product
photos and pictures are for illustration purposes only and may differ from
the real product’s appearance.
1 page  
Data sheet
BMA220
Page 5
1. Specification
If not stated otherwise, the given values are maximum values over lifetime and full performance
temperature and voltage ranges. Min/max. data represent 3-sigma values.
Table 1: Operating conditions, output signal and mechanical characteristics
Parameter
Acceleration Range
Supply Voltage
Analog Domain
Supply Voltage
Digital Domain
Supply Voltage
I/O Domain
Voltage Input
Low Level
Voltage Input
High Level
Voltage Output
High Level
Voltage Output
Low Level
Supply Current in
Normal Mode
Supply current in
Low Power Mode
Supply Current in
Suspend Mode
Wake-Up Time
Symbol
gFS2g
gFS4g
gFS8g
gFS16g
VDDA
VDDD
VDDIO
VIL SPI
VIL I2C
VIH SPI
VIH I2C
VOH
VOL SPI
VOL I2C
IDD
IDDsl
IDDsd
tw_up
Condition
Min
OPERATING CONDITIONS
switchable via
serial digital
interface
1.62
Typ
±2.0
±4.0
±8.0
±16.0
1.8
1.62
1.8
1.62
SPI
I²C
SPI
I²C
SPI & I²C
0.9*VDDIO
0.7*VDDIO
SPI
I²C, RP ≥ 680
Nominal VDD
supplies at TA=25°C
Nominal VDD
supplies TA=25°C,
BW = 1kHz
sleep dur. > 25ms
Nominal VDD
supplies at TA=25°C
from sleep/suspend
mode @1kHz bw
VDDIO
GND
250
< 10
Max
1.98
1.98
3.6
0.1*VDDIO
0.3*VDDIO
0.2*VDDIO
<1
1.2
Units
g
g
g
g
V
V
V
V
V
V
V
V
V
V
A
A
A
ms
BST-BMA220-DS003-08 | Revision 1.15 | August 2011
Bosch Sensortec
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such 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.
5 Page 
Data sheet
BMA220
Page 11
4.1.3 Low-power mode dimensioning
The power saving that can be achieved depends on the programmed sleep duration and the
configured bandwidth. Figure 4 explains the power consumption in relation to the different ASIC
states (sleep and awake phases).
Figure 4: Sleep and awake phase
If a low bandwidth is selected, the time required for filter settling might be the dominating time.
Refer to table 2 for the appropriate dimensioning of the attainable current saving.
Table 4: Approximate awake phase times for 1 data sample
Filter cut-off
32 Hz
64 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
Settling time
16690µs
8690µs
4690µs
2690µs
1690µs
1190µs
4.1.4 Channel activation / de-activation
In order to optimize further power consumption of the BMA220, data evaluation of individual
axes can be deactivated. Per default, all three axes are active. If the user wants to disable one
or more axes, the appropriate en_?_channel bits at address 0x0F (SPI) / 0x1E (I2C) must be
set to ‘0’.
BST-BMA220-DS003-08 | Revision 1.15 | August 2011
Bosch Sensortec
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such 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.
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BMA220.PDF ] | |
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