DPS310 datasheet(14/41 Pages) INFINEON

14 / 41 page

4.9.1

How to Calculate Compensated Pressure Values

Steps

1. Read the pressure calibration coefficients (c00, c10, c20, c30, c01, c11, and c21) from the Calibration

Coefficient register.

Note:

The coefficients read from the coefficient register are 2's complement numbers.

2. Choose scaling factors kT (for temperature) and kP (for pressure) based on the chosen precision rate. The

scaling factors are listed in Table 9 .

3. Read the pressure and temperature result from the registers or FIFO.

Note:

The measurements read from the result registers (or FIFO) are 24 bit 2´s complement numbers.

Depending on the chosen measurement rates, the temperature may not have been measured

since the last pressure measurement.

4. Calculate scaled measurement results.

Traw_sc = Traw/kT

Praw_sc = Praw/kP

5. Calculate compensated measurement results.

Pcomp(Pa) = c00 + Praw_sc*(c10 + Praw_sc *(c20+ Praw_sc *c30)) + Traw_sc *c01 +

Traw_sc *Praw_sc *(c11+Praw_sc*c21)

4.9.2

How to Calculate Compensated Temperature Values

Steps

1. Read the temperature calibration coefficients ( c0 and c1 ) from the Calibration Coefficients (COEF) register.

Note:

The coefficients read from the coefficient register are 12 bit 2´s complement numbers.

2. Choose scaling factor kT (for temperature) based on the chosen precision rate. The scaling factors are listed

in Table 9 .

3. Read the temperature result from the temperature register or FIFO.

Note:

The temperature measurements read from the temperature result register (or FIFO) are 24 bit 2´s

complement numbers.

4. Calculate scaled measurement results.

Traw_sc = Traw/kT

5. Calculate compensated measurement results.

DPS310 - Digital Pressure Sensor

Digital Barometric Pressure Sensor for Portable Devices

Functional Description

V1.0

2016-09-05

DPS310 Datenblatt(PDF) 14 Page - Infineon Technologies AG