DHT20 Humidity and Temperature Module
The DHT20 is an upgraded humidity and temperature sensor that offers superior performance and reliability compared to its predecessor, the DHT11. Featuring a dedicated ASIC sensor chip, a high-performance capacitive humidity sensor, and an on-chip temperature sensor, the DHT20 provides accurate digital output via the IC protocol. Its enhanced stability in high-temperature and high-humidity environments, improved accuracy, faster response time, and wider measurement range make it ideal for a broad spectrum of applications. Each sensor undergoes rigorous calibration and testing to ensure it meets the demands of large-scale deployments.
Product Overview
The DHT20 is a digital humidity and temperature sensor with IC output, designed for precise environmental monitoring. It excels in applications requiring accurate detection and control of temperature and humidity, including HVAC systems, dehumidifiers, testing and inspection equipment, consumer electronics, automotive systems, weather stations, and home appliances. Its improved performance in challenging environments and excellent long-term stability ensure reliable data acquisition.
Product Attributes
- Brand: Aosong
- Sensor Model: DHT20
- Communication Protocol: IC
- Humidity Sensitivity Level (MSL): 1 (according to IPC/JEDEC J-STD-020)
Technical Specifications
| Parameter | Condition | Min | Typical Value | Max | Unit | Resolution |
|---|---|---|---|---|---|---|
| Relative Humidity | ||||||
| Accuracy | Typical | - | 3 | - | %RH | - |
| Tolerance | Max | - | - | See Figure 2 | %RH | - |
| Repeatable | - | - | 0.1 | - | %RH | - |
| Hysteresis | - | - | 1 | - | %RH | - |
| Nonlinear | - | - | <0.1 | - | %RH | - |
| Response Time (63%) | - | - | <8 | - | s | - |
| Scope of Work Extended | - | 0 | - | 100 | %RH | - |
| Prolonged Drift | Normal | - | <0.5 | - | %/yr | - |
| Electrical Specifications | ||||||
| Supply Voltage | Typical | 2.2 | 3.3 | 5.5 | V DC | - |
| Supply Current (IDD) | Dormancy | - | 250 | - | nA | - |
| Supply Current (IDD) | Measure | - | 980 | - | A | - |
| Power Consumption | Dormancy | - | - | 0.8 | W | - |
| Power Consumption | Measure | - | - | 3.2 | mW | - |
| Communication Standard | - | - | IC protocol | - | - | - |
| Temperature | ||||||
| Accuracy | Typical | - | 0.5 | - | C | - |
| Repeatable | - | - | 0.1 | - | C | - |
| Hysteresis | - | - | 0.1 | - | C | - |
| Response Time (63%) | 5 - 30 C | - | - | - | s | - |
| Scope of Work Extended | - | -40 | - | 80 | C | - |
| Prolonged Drift | Normal | - | <0.04 | - | C /yr | - |
| Package Information | ||||||
| Sensor Model | Package | Quantity | - | - | - | - |
| DHT20 | Pallet packaging | 100PCS/Pallet(MAX) | - | - | - | - |
| Absolute Maximum Ratings | ||||||
| VDD to GND | - | -0.3 | - | 5.5 | V | - |
| Digital I/O Pins (SDA, SCL) to GND | - | -0.3 | - | VDD+0.3 | V | - |
| Input current per pin | - | -10 | - | 10 | mA | - |
2410301747_Adafruit-Industries-5183_C3664384.pdf
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