www.aosong.com Guangzhou Aosong Electronics Co.,Ltd. Tel:400-630-5378 Version:V1.0
AM2322 Product Manual
Temperature and humidity sensor
Fully calibrated
Digital signal output
Excellent long-term stability
Low power consumption, high cost performance
Standard I2C bus output
Standard single bus output
Figure 1:AM2322 shape inch (Unit: mm Not speci
fi
ed tolerance: ±0.2mm)
External Interface: 1:VDD 2:SDA
3:GND 4:SCL
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16
•
•
•
•
•
•
9.0±1
Applied range
Hvac, dehumidi
fier, testing and inspection equipment, consumer goods, automobile, automatic control,
data recorder, meteorology station, home appliance, humidity control,medical treatment and other related
temperature and humidity detection control.
4.0±0.5
0.40±0.05
Product reviews
AM2322 digital temperature and humidity sensor is a contain
calibration digital composite signal output of the temperature
and humidity sensor. Using special technology of collecting
the data of temperature and humidity, ensure that the
product has a very high reliability and excellent long-term
stability. Includes a capacitive moisture sensor element and
a high precision integrated temperature measuring element,
And connected to a high performance microprocessor.
The
product has excellent quality, super fast response, strong
anti-interference ability, extremely high performance-price
ratio.
AM2322 communication mode using single bus
and standard I2C , two kinds of communication mode.
Standard single bus interface, make the system integration
becomes simple and fast.
Super small volume, low power consumption, signal transmission
distance of 20 meters, making it a all kinds of application of the best
choice for even the most demanding applications. I2C communication
mode with a standard communication sequence, the user can be directly
hung on I2C communication bus, no additional wiring, simple to use.
Two kinds of communication mode is used directly output after
temperature compensation, humidity, temperature and calibration of
CRC and other digital information, users need to secondary calculation
of digital output, No need to compensate the temperature humidity,
accurate temperature and humidity information can be got. Two kinds of
communication mode are free to switch, users can choose, easy to use,
wide application field. Product is 4 wire, convenient connection, special
packaging format can be provided according to user requirements.
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2
3
4
5
6
7
8
Work scope: 0-80% RH, beyond this range, sensor readings will have deviation (H
humidity 90% after 200 hours, drift < 3% RH ). The scope of work further limit
in - 40-80 ℃.
The accuracy of factory inspection, sensors in 25 ℃ under the condition of the
power supply voltage of 5 v test precision .This value does not include the
hysteresis and nonlinear and applies only to the cooling conditions.
25 ℃ and 1 m/s air conditions, 63% of first order responsetime.
If the sensor is surrounded by volatile solvent , with a pungent odor tape,
adhesives and packaging materials, reading may be on the high side.Details
please refer to the relevant documents.
Minimum and maximum values are based on the power consumption of
VDD = 5 v and T < 60 ℃ condition. In the average of every two seconds, the value
of ameasurement.
Low-level output current.
Denotes the pull-up resistance.
The response time depends on the thermal conductivity of the sensorsubstrate.
5
6
7
2
Unit
Condition
Sleep mode
Measure
Average
Decline
Rise
Open
Tristate(close)
Parameter
The power supply voltage
Power dissipation
Low level output voltage
High level output voltage
Low level input voltage
High level input voltage
The output current
Sampling period
3.1
15
1200
600
0
300
90%
100%
30%
70%
100%
1
5.1
100
8
10
10
2
5.5
5
www.aosong.com Guangzhou Aosong Electronics Co.,Ltd. Tel:400-630-5378 Version:V1.0
AM2322 Product Manual
Figure 2 Maximum error in relative humidity at 25°C
Relative humidity
(%RH)
Figure 3
T
ypical and maximum temperature errors
T
emperature (°C)
Electrical specification
Table 2 Electrical characteristics
△RH(%RH)
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16
0 10 20 30 4 0 50 60 7 0 80 90 100
±
0
±2
±4
±
6
±
8
±1
0
axM
Typical
-
4
0
-2
0
0
2
0
4
0
6 0
80
±
0
.
0
±
0
.
5
±1 .
0
±1 .
5
± 2.
0
△
T
℃
Max
Typical
parameter
resolution
Accuracy
1
error
repeatable
hysteresis
nonlinear
Response time
Scope of work
Prolonged Drift
5
30
condition
min typical
max
unit
typical
typical
max
0.01
±0.3
See Figure 3
±0.1
±0.1
t 63%
℃
℃
℃
℃
℃
℃
S
℃
℃/yr
80
-40
3
extended
normal
<0.1
parameter
condition
min typical
max
unit
resolution
Accuracy
1
error
repeatable
hysteresis
nonlinear
Response time
Scope of work
typical
typical
max
0.024
±2
See Figure 2
±0.1
±1
t 63% 8
%RH
%RH
%RH
%RH
%RH
%RH
S
%RH
%RH/yr
<0.1
100
0
3
extended
normal
<1Prolonged Drift
Sensor capability
Relative humidity
Table 1
T
able of humidity characteristics
Temperature
T
able 3
T
emperature characteristics table