1-100694-01 View Datasheet(PDF) - Sensitron
Part Name
Description
Manufacturer
1-100694-01 Datasheet PDF : 12 Pages
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Sensor Performance
Relative Humidity1234
Parameter
Condition
Resolution 1
12 bit
8 bit
Accuracy
typ
tolerance 2
max
Repeatability
Hysteresis
Nonlinearity
Response time 3 63%
Operating Range extended 4
Long Term Drift 5 normal
min typ max Units
0.04
%RH
0.7
%RH
2.0
%RH
see Figure 2 %RH
0.1
%RH
1
%RH
<0.1
%RH
8
s
0
100 %RH
< 0.5
%RH/yr
RH (%RH)
± 10
±8
±6
maximal tolerance
typical tolerance
±4
±2
±0
0 10 20 30 40 50 60 70 80 90 100
Relative Humidity (%RH)
Figure 2 Typical and maximal tolerance at 25°C for relative
humidity. For extensive information see Users Guide, Sect. 1.2.
Electrical Specification
Parameter
Conditions min typ max Units
Supply Voltage, VDD
2.1 3.0 3.6 V
Supply Current, IDD 6 sleep mode
- 0.15 0.4 µA
measuring 270 300 330 µA
sleep mode - 0.5 1.2 µW
Power Dissipation 6 measuring 0.8 0.9 1.0 mW
average 8bit - 1.5 - µW
Heater
VDD = 3.0 V 5.5mW, T = + 0.5-1.5°C
Communication digital 2-wire interface, true I2C protocol
Table 1 Electrical specification. For absolute maximum
values see Chapter 3 of Users Guide.
1 Default measurement resolution is 14bit (temperature) / 12bit (humidity). It can
be reduced to 12/8bit, 11/11bit or 13/10bit by command to user register.
2 Accuracies are tested at Outgoing Quality Control at 25°C (77°F) and 3.0V.
Values exclude hysteresis and non-linearity and are applicable to non-
condensing environments only.
3 Time for achieving 63% of a step function, valid at 25°C and 1 m/s airflow.
4 Normal operating range: 0-80%RH, beyond this limit sensor may read a
reversible offset with slow kinetics (<3%RH after 200hours at 90%RH). For more
details please see Section 1.1 of the Users Guide.
Temperature567
Parameter
Condition min typ max Units
Resolution 1
14 bit
12 bit
0.01
°C
0.04
°C
Accuracy
tolerance 2
typ
0.3
°C
max
see Figure 3
°C
Repeatability
0.1
°C
Operating Range extended 4 -40
-40
125 °C
257 °F
Response Time 7 63%
5
30 s
Long Term Drift
< 0.04
°C/yr
T (°C)
± 3.0
± 2.5
± 2.0
± 1.5
± 1.0
± 0.5
± 0.0
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Figure 3 Maximal tolerance for temperature sensor in °C.
Packaging Information
Sensor Type
SHT21
Packaging
Tape & Reel
Tape & Reel
Tape & Reel
Quantity
400
1500
5000
Order Number
1-100707-01
1-100645-01
1-100694-01
This datasheet is subject to change and may be amended
without prior notice.
5 Value may be higher in environments with vaporized solvents, out-gassing
tapes, adhesives, packaging materials, etc. For more details please refer to
Handling Instructions.
6 Min and max values of Supply Current and Power Dissipation are based on
fixed VDD = 3.0V and T<60°C. The average value is based on one 8bit
measurement per second.
7 Response time depends on heat conductivity of sensor substrate.
www.sensirion.com
Version 1.0 – January 2010
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