BME688 datasheet(13/60 Pages) BOSCH

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Bosch Sensortec | BME688 Datasheet

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Modifications reserved |Data subject to change without notice | Printed in Germany

Document number: BST-BME688-DS000-03 Revision_1.3 022024

1.4 Pressure sensor specification

Table 9: Pressure parameter specification

Parameter

Symbol

Condition

Min

Typ

Max

Unit

Operating temperature

range

operational

-40

°C

full accuracy

Operating pressure

range

full accuracy

300

1100

hPa

Supply current

IDD,LP

1 Hz forced mode,

pressure and temperature,

lowest power

3.1

4.2

µA

Temperature coefficient

of offset17

TCOP

25 - 40 °C, 900 hPa

±1.3

Pa/K

±10.9

cm/K

Absolute accuracy

pressure

Ap, full

300 - 1100 hPa

0 - 65°C

±0.6

hPa

Relative accuracy

pressure

Arel

700 – 900 hPa,

25 - 40 °C, at constant

humidity

±0.12

hPa

Arel

900 – 1100 hPa

25 - 40 °C, at constant

humidity

±0.12

hPa

Resolution of

pressure output data

Highest oversampling

0.18

Noise in pressure

NP,fullBW

Full bandwidth, highest

oversampling

1.4

Reduced bandwidth, highest

oversampling

0.2

1.7

Solder drift

Minimum solder height 50 µm

-0.5

1.2

+2.0

hPa

Long-term stability18

Pstab

per year

±1.0

hPa

Possible sampling rate

fsample_P

Lowest oversampling,

see chapter 3.6.2

157

182

17 When changing temperature from 25 °C to 40 °C at constant pressure / altitude, the measured pressure / altitude will change by (15×TCOP).

18 Long-term stability is specified in the full accuracy operating pressure range 0‒65 °C

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