Datasheet

Page 18
BST-BME280-DS001-10 | Revision 1.1 | May 2015 Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
Table 9: Settings and performance for indoor navigation
Suggested settings for indoor navigation
Sensor mode
normal mode, t
standby
= 0.5 ms
Oversampling settings
pressure ×16, temperature ×2, humidity ×1
IIR filter settings
filter coefficient 16
Performance for suggested settings
Current consumption
633 µA
RMS Noise
0.2 Pa / 1.7 cm
Data output rate
25Hz
Filter bandwidth
0.53 Hz
Response time (75%)
0.9 s
3.5.4 Gaming
Low altitude noise is needed. The required bandwidth is ~2 Hz in order to respond quickly to
altitude changes (e.g. be able to dodge a flying monster in a game). Increased power
consumption is tolerated. Humidity sensor is disabled. This setting is suggested for the Android
SENSOR_DELAY_SENSOR_DELAY_
Table 10: Settings and performance for gaming
Suggested settings for gaming
Sensor mode
normal mode, t
standby
= 0.5 ms
Oversampling settings
pressure ×4, temperature ×1, humidity ×0
IIR filter settings
filter coefficient 16
Performance for suggested settings
Current consumption
581 µA
RMS Noise
0.3 Pa / 2.5 cm
Data output rate
83 Hz
Filter bandwidth
1.75 Hz
Response time (75%)
0.3 s
3.6 Noise
The noise depends on the oversampling and, for pressure and temperature, on the filter setting
used. The stated values were determined in a controlled environment and are based on the
average standard deviation of 32 consecutive measurement points taken at highest sampling
speed. This is needed in order to exclude long term drifts from the noise measurement. The
noise depends both on humidity/pressure oversampling and temperature oversampling, since
the temperature value is used for humidity/pressure temperature compensation. The
oversampling combinations use below results in an optimal power to noise ratio.