Temperature-Humidity Sensor-AM2311A (Upgraded Version of DHT22)

Description AM2311A (an upgraded version of DHT22) digital temperature and humidity sensor provides calibrated digital signal output. AM2311A digital temperature and humidity sensor use special temperature and humidity acquisition technology to ensure that the product has high reliability and excellent long-term stability. The AM2311A digital temperature and humidity sensor is composed of capacitive humidity elements and integrated high-precision temperature measurement equipment and is connected to a high-performance microprocessor. Feature Includes a capacitive humidity sensor and a high precision temperature sensor. Full calibration Digital output, unibus interface Excellent long-term stability Quick response and strong anti-jamming capability Note If the sensor is surrounded by volatile solvents, irritating tapes, adhesives, and packaging materials, the reading may be higher. For more information, please refer to the relevant documents. The AM2311A includes a capacitive humidity sensor and a high precision temperature sensor. The range of humidity sensor is 0 to 99.9 %RH with ±3% accuracy while the temperature sensor ranges from -40 to 80℃ with ±0.5℃ accuracy. Calibration coefficients are stored in the form of a program in the single-chip computer. These calibration coefficients are called in the process of processing the detection signal inside the sensor. A standard single bus interface makes system integration easy and fast. The standard single bus interface makes system integration easy and fast. Ultra-small size, very low power consumption, Signal transmission distance can reach more than 20 meters. Products are cited as 3Wire (single bus interface) the connection is convenient. You can download the Datasheet Specification Typical accuracy (% RH) ± 3 Operating range (% RH) 0 to 99.9 Humi response time(s) 5 Typical accuracy (°C) ± 0.5 Operating range (°C) -40~80 Temp response time(s) 5 Interface 1-Wire Supply voltage(V) 3.3~5.5 Application Scope An HVAC system, dehumidifier, test, and inspection equipment, consumer goods, automobiles, automatic control, data recorder, weather, household appliances, humidity regulation, medical and other related temperature and humidity detection and control. Electric specification Parameter Condition Min Typical Max Unit Supply Voltage 　 3.3 5 5.5 V Power-consumption Sleep 2 15 　 μA measuring 　 1200 　 μA Average 　 600 　 μA Low level output voltage I OL 0 　 300 mV High level output voltage Rp