bmp280 datasheet

Bosch
Sensortec | BMP280 Data sheet
14 |
48
Modifications reserved | Data subject to change without notice
Document number: BST-BMP280-DS001-23 Revision_1.23_11202
0
Table 6: filter settings
Filter coefficient Samples to reach ≥75 %
of step response
Filter off
1
2
2
4
5
8
11
16
22
In order to find a suitable setting for filter, please consult chapter 3.4.
When writing to the register filter, the filter is reset. The next value will pass through the filter and be
the initial memory value for the filter. If temperature or pressure measurement is skipped, the
corresponding filter memory will be kept unchanged even though the output registers are set to
0x80000. When the previously skipped measurement is re-enabled, the output will be filtered using the
filter memory from the last time when the measurement was not skipped.
3.4 Filter selection
In order to select optimal settings, the following use cases are suggested:
Table 7: Recommended filter settings based on use cases
Use case Mode Over-
sampling
setting
osrs_p osrs_t IIR
filter
coeff.
(see
3.3.3)
I
DD
[µA]
(see
3.7)
ODR
[Hz]
(see
3.8.2)
RMS
Noise
[cm]
(see
3.5)
handheld device
low-power
(e.g. Android)
Normal
Ultra high
resolution
×16
×2
4
247
10.0
4.0
handheld device
dynamic
(e.g. Android)
Normal
Standard
resolution
×4
×1
16
577
83.3
2.4
Weather
monitoring
(lowest power)
Forced
Ultra low
power
×1
×1
Off
0.14
1/60
26.4
Elevator / floor
change detection
Normal
Standard
resolution
×4
×1
4
50.9
7.3
6.4
Drop detection
Normal
Low
power
×2
×1
Off
509
125
20.8
Indoor navigation Normal Ultra high
resolution
×16 ×2 16 650 26.3 1.6