Datasheet

BMP280 Digital Pressure Sensor

Page 18

BST-BMP280-DS001-19 | Revision 1.19 | January 2018

Bosch Sensortec

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Note: Specifications within this document are subject to change without notice. Not intended for publication.

3.7 Current consumption

The current consumption depends on ODR and oversampling setting. The values given below

are normalized to an ODR of 1 Hz. The actual consumption at a given ODR can be calculated by

multiplying the consumption in Table 12 with the ODR used. The actual ODR is defined either by

in normal mode in Table 14.

Table 12: Current consumption

Oversampling setting

Pressure

oversampling

Temperature

oversampling

Typ

Max

Ultra low power

×1

×1

2.74

4.16

Low power

×2

×1

4.17

6.27

Standard resolution

×4

×1

7.02

10.50

High resolution

×8

×1

12.7

18.95

Ultra high resolution

×16

×2

24.8

36.85

3.8 Measurement timings

The rate at which measurements can be performed in forced mode depends on the oversampling

settings osrs_t and osrs_p. The rate at which they are performed in normal mode depends on the

the resulting ODRs are given only for the suggested osrs combinations.

3.8.1 Measurement time

The following table explains the typical and maximum measurement time based on selected

oversampling setting. The minimum achievable frequency is determined by the maximum

measurement time.

Table 13: measurement time

Oversampling

setting

Pressure

oversampling

Temperature

oversampling

Measurement

time [ms]

Measurement

rate [Hz]

Typ

Max

Typ

Min

Ultra low power

×1

×1

5.5

6.4

181.8

155.6

Low power

×2

×1

7.5

8.7

133.3

114.6

Standard resolution

×4

×1

11.5

13.3

87.0

75.0

High resolution

×8

×1

19.5

22.5

51.3

44.4

Ultra high

resolution

×16

×2

37.5

43.2

26.7

23.1