FXPS7400DI4 datasheet(11/75 Pages) NXP

11 / 75 page

NXP Semiconductors

FXPS7400D4

Digital absolute pressure sensor, 20 kPa to 400 kPa

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frequency (Hz)

104

103

102

400

600

200

800

1000

delay

(µs)

minimum

typical

maximum

Figure 11. 1000 Hz, 4-pole output signal delay

7.3.3.4 Absolute pressure output data scaling equation

Equation 4 is used to convert absolute pressure readings with the variables as specified

in Table 7. Note, the specified values apply only if the P_CAL_ZERO value is set to

0000h.

(4)

Where:

PABSkPa = The absolute pressure output in kPa.

PABSLSB = The absolute pressure output in LSB.

PABSOFFLSB = The internal trimmed absolute pressure output value at 0 kPa in LSB.

PABSSENSE = The trimmed absolute pressure sensitivity in LSB/kPa.

Range

Data reading

PABSOffLSB (LSB)

PABSSENSE (LSB/kPa)

12-bit sensor data request[1]

159

16-bit register/data read 62h and 63h 28990

Interrupt threshold registers 46h to

49h

28990

20 kPa - 400 kPa

16-bit sensor data request[1]

2544

112

Table 7. Scaling parameters

[1]

SPI mode only. See Section 7.7.8.1 for more details.

7.3.4 Temperature sensor

7.3.4.1 Temperature sensor signal chain

The device includes a temperature sensor for signal compensation and user readability.

Figure 12 shows a simplified block diagram. Temperature sensor parameters are

specified in Table 104 and Table 105.

FXPS7400D4

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

Product data sheet

Rev. 6 — 6 June 2022

11 / 75

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