BMA020 Bosch Sensortec, BMA020 Datasheet - Page 45
![3-AXIS ACCELEROMETER DIGITAL I/F](/photos/18/36/183629/bma020_sml.jpg)
BMA020
Manufacturer Part Number
BMA020
Description
3-AXIS ACCELEROMETER DIGITAL I/F
Manufacturer
Bosch Sensortec
Datasheet
1.BMA020.pdf
(50 pages)
Specifications of BMA020
Axis
X, Y, Z
Acceleration Range
± 2g, 4g, 8g
Sensitivity
256LSB/g, 128LSB/g, 64LSB/g
Voltage - Supply
2 V ~ 3.6 V
Output Type
Digital
Bandwidth
3kHz
Interface
I²C, SPI
Mounting Type
Surface Mount
Package / Case
12-LGA
For Use With
828-1014 - BMA020 TRIBOX DEMO BOARD W/USB828-1008 - BMA020 DAUGHTERCARD FOR DEV KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
828-1000-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
BMA020
Manufacturer:
BOSCH/博世
Quantity:
20 000
So, the relevant parameters for power consumption in self-wake up mode are:
As some of these parameters have certain deviations from the typical value results of various
example Monte Carlo Simulations on the current consumption are shown in figures 25, 26 and
27.
The graphs provide an indication on the expected current consumption for different settings.
Figure 25: Estimation of current consumption using Monte Carlo simulation,
example #1: bandwidth 750Hz, 2560ms wake-up setting, any-motion interrupt
Rev. 1.2
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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.
800
800
700
700
600
600
500
500
400
400
300
300
200
200
100
100
0
0
1.1
1.1
- the current consumption in normal mode
- the current consumption in sleep mode
- the self-wake up pause duration
- the bandwidth (ie. length of digital filter to be filled for one data point)
- the interrupt criteria (determines the duration of normal operation):
MW
MW
3s
3s
yield 100 %
yield 100 %
1.2
1.2
0.174 µA
0.174 µA
1.41 µA
1.41 µA
1.3
1.3
i_self_w ake_up [µA]
i_self_w ake_up [µA]
CurrentSelfWakeUp
CurrentSelfWakeUp
1.4
1.4
•
•
high-g and low-g criteria (ie. acquisition of one data point)
any-motion criterion (ie. four data points)
1.5
1.5
Digital, triaxial acceleration sensor
1.6
1.6
1.7
1.7
Data sheet
BMA020
Page 45
1.8
1.8
Bosch Sensortec
30 May 2008