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ILPS28QSW Datasheet(PDF) 33 Page - STMicroelectronics

Part # ILPS28QSW
Description  Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with Qvar detection in a water-resistant package
PDF  52 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ILPS28QSW Datasheet(HTML) 33 Page - STMicroelectronics

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The following table summarizes the current consumption of all the ASIC resolution modes.
Table 23. Power consumption for pressure acquistion (when AH and Qvar are disabled)
AVG
One-shot mode
Continuous mode – current consumption (μA) vs. ODR
Current consumption (μA) @ 1 Hz
ODR Max
1 Hz
4 Hz
10 Hz
25 Hz
50 Hz
75 Hz
100 Hz
200 Hz
512
32.2
25
32.8
126.8
314.4
783.8
-
-
-
-
128
9.4
75
10
35.6
86.7
214.3
427
639.8
-
-
64
5.6
100
6.3
20.4
48.7
119.4
237.2
355
472.8
-
32
3.7
200
4.4
12.8
29.8
71.9
142.2
212.6
282.9
564.4
16
2.7
300
3.5
9
20.2
48.2
94.8
141.4
188
374
8
2
400
2.7
6
12.6
29.1
56.5
84.2
111.5
221.7
4
1.7
500
2.5
5
10.2
23.2
44.7
66.2
87.8
174
Table 24. Power consumption for Qvar acquisition
AVG
One-shot mode
Continuous mode – current consumption (μA) vs. ODR
Current consumption (μA)
@ 1 Hz
ODR max
1 Hz
4 Hz
10 Hz
25 Hz
50 Hz
75 Hz
100 Hz
200 Hz
512
21.9
25
22.6
76.4
184.5
458.6
-
-
-
-
128
8.6
75
9.3
24.1
53.9
128.4
253.4
379
-
-
64
6.5
100
7.2
15.4
32.1
73.6
143.2
213.1
283.1
-
32
5.4
200
6.1
11.1
21.3
46.5
88.6
131
173.4
343.4
16
4.8
300
5.5
8.9
15.7
32.8
61.4
90
118.7
233.4
8
4.3
400
5
6.9
10.7
20
35.8
51.4
67.1
130.2
4
4.2
500
4.9
6.4
9.3
16.6
28.9
41.2
53.5
102.7
The noise performance of ILPS28QSW is also defined as depending on the ODR and selected resolution and its
performance is a trade-off between the power consumption and resolution. The noise performance is indicated in
the following table.
Table 25. Noise performance
AVG
FS = 1260 hPa
FS = 4060 hPa
Pressure noise (Parms)
Pressure noise (Parms)
ODR/2
ODR/4
ODR/9
ODR/2
ODR/4
ODR/9
512
0.56
0.42
0.32
1.15
0.76
0.57
128
0.86
0.63
0.46
2.03
1.43
1.02
64
1.14
0.83
0.58
2.77
1.95
1.44
32
1.50
1.10
0.80
3.78
2.77
1.98
16
2.10
1.54
1.03
5.35
3.84
2.81
8
2.88
2.05
1.45
7.44
5.27
3.84
4
3.80
2.76
1.95
10.23
7.33
5.28
ILPS28QSW
CTRL_REG1 (10h)
DS13905 - Rev 1
page 33/52



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