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ILPS22QSTR Arkusz danych(PDF) 37 Page - STMicroelectronics

Numer części ILPS22QSTR
Szczegółowy opis  Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with embedded Qvar electrostatic sensor
PDF  57 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ILPS22QSTR Arkusz danych(HTML) 37 Page - STMicroelectronics

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The following table summarizes the current consumption of all the ASIC resolution modes.
Table 22. Power consumption for pressure 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
31.1
25
32.8
126.8
314.4
783.8
-
-
-
-
128
9.2
75
10
35.6
86.7
214.3
427
639.8
-
-
64
5.5
100
6.3
20.4
48.7
119.4
237.2
355
472.8
-
32
3.6
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
1.8
500
2.5
5
10.2
23.2
44.7
66.2
87.8
174
Table 23. 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 pressure in ILPS22QS 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 24. Noise performance of pressure
AVG
FS = 1260 hPa
FS = 4060 hPa
Pressure noise (Parms)
Pressure noise (Parms)
ODR/2(1)
ODR/4
ODR/9
ODR/2(1)
ODR/4
ODR/9
512
0.59
0.44
0.34
1.16
0.85
0.64
128
0.9
0.67
0.48
2.15
1.48
1.11
64
1.20
0.86
0.64
2.98
2.05
1.55
32
1.64
1.16
0.87
4.14
2.89
2.10
16
2.30
1.63
1.18
5.86
4.11
2.97
8
3.12
2.18
1.60
8.11
5.73
4.23
4
4.26
2.87
2.20
11.3
7.82
5.81
1. LPF1 filter is disabled.
ILPS22QS
CTRL_REG1 (10h)
DS13431 - Rev 3
page 37/57



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