FXPS7115D4 datasheet(58/72 Pages) NXP

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NXP Semiconductors

FXPS7115D4

Digital absolute pressure sensor, 40 kPa to 115 kPa

aaa-029734

temperature (°C)

130

-20

-40

-1.0

1.0

2.0

1.75

-1.75

absolute

pressure

error

(kPa)

-2.0

absolute pressure accuracy

= ± 1.25 kPa from 0°C - 85°C

Figure 23. Absolute pressure accuracy as a function of temperature

Figure 24. Absolute pressure accuracy multiplier over life

14 Application information

The FXPS7115D4 sensor can operate in two modes: I2C and SPI. The application diagrams in Figure 25 and

Figure 26 show the modes and their respective biasing and bypass components.

The sensor can be configured to operate in SPI mode to read the user registers, self-test and diagnostics

information. The application diagram in Figure 26 shows the SPI and the respective biasing and bypass

components.

Note: A gel is used to provide media protection against corrosive elements which may otherwise damage

metal bond wires and/or IC surfaces. Highly pressurized gas molecules may permeate through the gel and then

occupy boundaries between material surfaces within the sensor package. When decompression occurs, the gas

molecules may collect, form bubbles and possibly result in delamination of the gel from the material it protects.

If a bubble is located on the pressure transducer surface or on the bond wires, the sensor measurement may

shift from its calibrated transfer function. In some cases, these temporary shifts could be outside the tolerances

listed in the data sheet. In rare cases, the bubble may bend the bond wires and result in a permanent shift.

FXPS7115D4

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 6.2 — 28 June 2023

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