DPS310 datasheet(4/41 Pages) INFINEON

4 / 41 page

Definitions, acronyms and abbreviations

1.1

Definitions

An explanation of terms and definitions used in this datasheet.

Table 1

Term

Definition/explanation

Absolute accuracy

The absolute measurement accuracy over the entire measurement

range.

Digital bit depth

The total bit depth used for conversion of the sensor input to the

digital output. Measured in bits.

Digital resolution

The pressure value represented by the LSB change in output. This

value should be much smaller than the sensor noise.

Full Scale Range (FSR)

The peak-to-peak measurement range of the sensor.

LSB

Least Significant Bit

Measurement time

The time required to acquire one sensor output result. This value

determines the maximum measurement rate.

MSB

Most Significant Bit

Non-linearity

The deviation of measured output from the best-fit straight line,

relative to 1000 hPa and 25 °C.

Output compensation

The process of applying an algorithm to the sensor output to improve

the absolute accuracy of the sensor across temperature and to

minimize unit to unit output variation. This algorithm makes use of

both the temperature sensor readings and the individual calibration

coefficients.

Precision (noise)

The smallest measurable change, expressed as rms, after sensor

oversampling.

Pressure temperature coefficient

The pressure measurement deviation, after compensation, from

expected measurement value due to temperature change from 25 °C.

Measured in Pa/K.

Sensor calibration

The process, during the production test, where the sensor's

measurement results are compared against reference values, and a set

of calibration coefficients are calculated from the deviation. The

coefficients are stored in the sensor's memory and are used in the

output compensation.

Sensor oversampling rate (OSR)

Specifies the number of sensor measurements used internally to

generate one sensor output result.

DPS310 - Digital Pressure Sensor

Digital Barometric Pressure Sensor for Portable Devices

Definitions, acronyms and abbreviations

V1.0

2016-09-05

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