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Bosch Sensortec | BMP280 Data sheet

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Modifications reserved | Data subject to change without notice

Document number: BST-BMP280-DS001-26 Revision_1.26_102021

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 the

frequency at which the user sets forced measurements or by oversampling and tstandby settings in

normal mode in Table 14.

Table 12: Current consumption

Oversampling setting

Pressure

oversampling

Temperature

oversampling

IDD [µA] @ 1 Hz forced mode

Typ

Max

Ultra low power

×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

oversampling setting settings osrs_t and osrs_p and the standby time tstandby. In the following table 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

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

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