Data sheet

BMP183

Page 12

BST-BMP183-DS000-00 | Revision 1.0 | June 2012

Bosch Sensortec

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parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

3.4.1 Hardware pressure sampling accuracy modes

By using different modes the optimum compromise between power consumption, speed and

resolution can be selected, see below table.

Table 3: Overview of BMP183 hardware accuracy modes, selected by driver software via the

variable oversampling_setting

Mode

Parameter

oversampling_setting

Internal

number of

samples

Conversion time

pressure max.

[ms]

Avg. current @

1 sample/s typ.

[µA]

RMS

noise

typ.

[hPa]

RMS

noise

typ.

[m]

ultra low power

0

1

4.5

3

0.06

0.5

standard

1

2

7.5

5

0.05

0.4

high resolution

2

4

13.5

7

0.04

0.3

ultra high resolution

3

8

25.5

12

0.03

0.25

For further information on noise characteristics see the relevant application note “Noise in pressure

sensor applications”.

All modes can be performed at higher speeds, e.g. up to 128 times per second for standard mode,

with the current consumption increasing proportionally to the sample rate.