NXP Semiconductors
FXPS7115D4
Digital absolute pressure sensor, 40 kPa to 115 kPa
aaa-029892
1000
delay
(µs)
800
600
400
200
0
minimum
typical
maximum
2
3
4
1
10
10
10
10
frequency (Hz)
Figure 11.ꢀ1000 Hz, 4-pole output signal delay
7.3.4.4 Absolute pressure output data scaling equation
Equation 4 is used to convert absolute pressure readings with the variables as specified
in the tables below. 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)
40 - 115 kPa
12-bit output
–1566.6
25538.8
25538
0
34.98
69.96
69.96
69.96
16-bit output
Interrupt threshold registers
P-zero calibration registers
7.3.5 Temperature sensor
7.3.5.1 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 101 and Table 102.
FXPS7115D4
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© NXP B.V. 2019. All rights reserved.
Product data sheet
Rev. 3 — 5 December 2019
12 / 72
NXP [ NXP ]
