SI7005-B-FM 데이터 시트보기 (PDF) - Silicon Laboratories
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SI7005-B-FM Datasheet PDF : 40 Pages
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Si7005
Table 4. Humidity Sensor
2.1 VDD 3.6 V; TA = 25 °C; tCONV = 35 ms unless otherwise noted.
Parameter
Operating Range1
Resolution2
Accuracy3,4
Symbol
Test Condition
Non-condensing
20–80% RH
Min
Typ
Max
Unit
0
—
100
%RH
—
—
12
bit
—
±3.0
±4.5 %RH
0–100% RH
See Figure 2
Repeatability—Noise
Response Time5
63%
1 m/s airflow
—
0.05
—
%RH
RMS
—
18
—
s
Hysteresis
Long Term Stability4
—
±1
—
%RH
—
0.25
— %RH/yr
Notes:
1. Recommended humidity operating range is 20 to 80% RH (non-condensing) over 0 to 60 °C. Prolonged operation
beyond these ranges may result in a shift of sensor reading, with slow recovery time.
2. The Si7005 has a nominal output of 16 codes per %RH, with 0h0000 = –24%RH.
3. Excludes hysteresis, long term drift, and certain other factors and is applicable to non-condensing environments only.
See section “4.2. Relative Humidity Sensor Accuracy” for more details.
4. May be impacted by dust, vaporized solvents or other contaminants, e.g., out-gassing tapes, adhesives, packaging
materials, etc. See section “4.10. Long Term Drift/Aging”.
5. Time for sensor output to reach 63% of its final value after a step change.
RHAccuracy
Max.RHError(±%)
Typ.RHError(±%)
10
9
8
7
6
5
4
3
2
1
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
RelativeHumidity(%)
Figure 2. RH Accuracy at 30 °C
Rev. 1.3
7
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