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1-100071-04 Humidity and Temperature Sensor ETC
Unspecified 
1-100071-04 Datasheet PDF : 11 Pages
1 2 3 4 5 6 7 8 9 10
Datasheet SHT7x
Sensor Performance
Relative Humidity12
Parameter
Resolution1
Accuracy2
SHT71
Accuracy2
SHT75
Repeatability
Replacement
Hysteresis
Nonlinearity
Response time3
Operating Range
Long term drift4
Condition
typ
max
typ
max
raw data
linearized
tau 63%
normal
min typ max Units
0.5 0.03 0.03 %RH
8 12 12 bit
±3.0
%RH
see Figure 2
±1.8
%RH
see Figure 2
±0.1
%RH
fully interchangeable
±1
%RH
±3
%RH
<<1
%RH
8
s
0
100 %RH
< 0.5
%RH/yr
Temperature45
Parameter
Condition min typ max Units
Resolution1
0.04 0.01 0.01 °C
12 14 14 bit
Accuracy2
SHT71
typ
±0.4
°C
max
see Figure 3
Accuracy2
SHT75
typ
±0.3
°C
max
see Figure 3
Repeatability
±0.1
°C
Replacement
fully interchangeable
Operating Range
-40
123.8 °C
-40
254.9 °F
Response Time 6 tau 63% 5
30 s
Long term drift
< 0.04
°C/yr
±6
±4
SHT71
±2
SHT75
±0
0
10 20 30 40 50 60 70 80 90 100
Relative Humidity (%RH)
Figure 2: Maximal RH-tolerance at 25°C per sensor type.
± 3.0
± 2.5
± 2.0
± 1.5
± 1.0
± 0.5
± 0.0
-40 -20
SHT75
0 20 40 60
Temperature (°C)
Figure 3: Maximal T-tolerance per sensor type.
SHT71
80 100
Electrical and General Items
Parameter
Source Voltage
Power
Consumption5
Communication
Storage
Condition min typ max Units
2.4 3.3 5.5 V
sleep
2 5 µW
measuring
3
mW
average
150
µW
digital 2-wire interface, see Communication
10 – 50°C (0 – 80°C peak), 20 – 60%RH
Packaging Information
Sensor Type
SHT71
SHT75
Packaging
Tape Stripes
Tape Stripes
Quantity
50
50
Order Number
1-100092-04
1-100071-04
1 The default measurement resolution of is 14bit for temperature and 12bit for
humidity. It can be reduced to 12/8bit by command to status register.
2 Accuracies are tested at Outgoing Quality Control at 25°C (77°F) and 3.3V.
Values exclude hysteresis and non-linearity.
3 Time for reaching 63% of a step function, valid at 25°C and 1 m/s airflow.
4 Value may be higher in environments with high contents of volatile organic
compounds. See Section 1.3 of Users Guide.
5 Values for VDD=5.5V at 25°C, average value at one 12bit measurement
per second.
6 Response time depends on heat capacity of and thermal resistance to
sensor substrate.
www.sensirion.com
Version 4.1 – July 2008
2/11
Direct download click here
 

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