Product Overview
AM2301 digital temperature and humidity module is a have already calibrated digital composite signal output of the
temperature and humidity sensor. It dedicated digital module acquisition technology and the temperature and
humidity sensor technology ,ensure that the product has a very high reliability and excellent long-term stability.
The
product has excellent quality, super fastresponse, strong anti-interference ability, extremely high performance-price
ratio. Every sensor in extremely precise humidity calibration laboratory calibration. Calibration
coefficient in the form of a program stored in the microcontroller, sensors inside in the process of detecting signal
processing to invoke the calibration coefficient. 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.
Hvac, dehumidi
fi
er
, 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.
AM2301 Product Manual
Temperature and humidity sensor
• Fully calibrated
Applied range
Figure1:
AM2301 Sensor package diagrams(Unit: mm
Tolerance not specified: 0.2mm)
• Digital output, Single bus interface
• Excellent long-term stability
• Quick response and anti-interference capability
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www.aosong.com Guangzhou Aosong Electronics Co.,Ltd. Tel:400-630-5378 Version:V1.0
240
m
m±5m
m
26.60
59.00
53.00
14.00
14.00±0.5
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
3.3
15
1200
600
0
300
90%
100%
30%
70%
100%
1
5.1
100
8
10
10
2
5.5
5
1
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.
0 10 20 30 40 50 60 70 80 90 100
±0
±2
±4
±6
±8
±10
△RH(%RH)
Max
-40 -20 0
20
40
60
80
±0.0
±0.5
±1.0
±1.5
±2.0
△T℃
Max
Relative humidity
(%RH)
Typical
Typical
Sensor capability
Relative humidity
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www.aosong.com Guangzhou Aosong Electronics Co.,Ltd. Tel:400-630-5378 Version:V1.0
AM2301 Product Manual
Figure 2 Maximum error in relative humidity at 25°C.
Figure 3 Typical and maximum temperature errors.
Temperature (°C)
Electrical specification
Table 2 Electrical characteristics.
Table 1 Table of humidity characteristics
Temperature
Table 3 Temperature characteristics table
extended
2
3
4
1
8
Unit
Condition
Parameter
Unit
Resolution
Accuracy
Repeatable
Response time
Hysteresis
Drift
Interchangeability
Range ability
Typical value
Complete interchangeable
Response time
Parameter
Condition
Resolution
Accuracy
Range ability
Repeatable
Interchangeability
Drift
Complete interchangeable
Figure 2
Figure 3