Datasheet

Bosch Sensortec
| BMI088 Data sheet
15 |
48
Modifications reserved | Data subject to change without notice
Document number: BST-BMI088-DS001-1
3
Revision_1.3_05201
8
4.3 Sensor Time
The accelerometer part of BMI088 has a built-in counter with a width of 24 bits. It increments periodically
with a resolution of 39.0625µs. Details can be found in chapter 5.3.5.
4.4 Output Data Rate (ODR) and Low-pass Filter
The sensor signals from the acceleration sensor and gyroscope analog front-end are each routed
through a low-pass filter.
4.4.1 Accelerometer
The 3db cut-off frequency of the digital low-pass filter depends on the chosen ODR as well as on the
over-sampling-ratio (OSR). Both can be configured in register ACC_CONF. The following table lists the
possible options:
Table 8: 3dB cutoff frequency of the accelerometer according to ODR and OSR settings in
ACC_CONF register
Accelerometer
ODR [Hz]
Normal
(acc_bwp = 2)
OSR2
(acc_bwp = 1)
OSR4
(acc_bwp = 0)
12.5
5 Hz
2 Hz
1 Hz
25
10 Hz
5 Hz
3 Hz
50
20 Hz
9 Hz
5 Hz
100
40 Hz
19 Hz
10 Hz
200
80 Hz
38 Hz
20 Hz
400
145 Hz
75 Hz
40 Hz
800
230 Hz
(200 Hz for z channel)
140 Hz
80 Hz
1600
280 Hz
(245 Hz for z channel)
234 Hz
(215 Hz for z channel)
145 Hz
4.4.2 Gyroscope
The user can choose between 8 different ODR and low pass filter bandwidth settings (see section 5.5.5).
4.5 Range Settings
The measurement range can be set through the registers described in section 5.3.9 for the
accelerometer and in section 5.5.4 for the gyroscope.
4.6 Self-test
The BMI088 incorporates a self-test feature for both the accelerometer and the gyroscope, indicating
whether the sensor is still ok.