Specifications

BMA180
Preliminary data sheet
Bosch Sensortec
Rev. 1.0 Page 19 / - proprietary information - 06 March 2009
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Specifications within this document are preliminary and subject to change without notice. Document is not intended for publication.
- high-g and low-g criteria (e. g. acquisition of one data point)
- any-motion criterion (e. g. four data points)
The following table shows values calculated for the average current consumption during the
wake-up mode of the BMA180. The power consumption in wake-up mode is dependent on the
duration of the interrupt algorithm (number of data acquisitions) and the bandwidth (for more
details on setting of the bandwidth please refer to chapter 7.8.2)
Typical current consumption (low power mode)
During wake-up mode [µA]
(depending on bandwidth, calculated using typical values)
Pause [ms]
(@ 1200Hz) (@ 600Hz) (@300Hz (@150Hz) (@75Hz) (@40Hz) (@20Hz) (@10Hz)
0
575 575 575 575 575 575 575 575
20
72 90 122 175 242 331 416 481
80
21 26 37 57 89 146 227 323
360
5 7 9 15 23 41 73 128
2560
2 2 2 3 4 7 12 23
Table 3: Average current consumption in self wake-up mode
using high-g or low-g interrupt, here typical values in low-power mode
Durations of the pause values can vary for about ±30% due to the accuracy of the oscillator
implemented within the sensor.
Additionally a graph of simulation results concerning typical current consumption (low power
mode) in wake-up mode is shown.
Typical wake-up-current BMA180/190
current mode: low power (noise = low)
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
0 100 200 300 400 500 600 700 800 900 1000 1100 1200
selected Bandwidth [Hz]
current consumption [µA]
0
20
80
360
2560