An Overview
The SHT11 belongs to the SHT1x series. These sensors are fully calibrated and provide a digital output. The SHT1x humidity sensor series includes SHT10, SHT11, and SHT15, all are relative humidity sensors. These humidity sensors integrate sensor elements with signal processing, give a fully calibrated digital output. It uses a unique capacitive sensor element for measuring relative humidity, while a band-gap sensor measures temperature.
The sensor ensures excellent reliability and long-term stability. They couple these humidity sensors to a 14-bit-analog-to-digital converter and a serial interface circuit. This provides greater signal quality and fast response time.
Features and Specifications of SHT11
Features
- Fully calibrated
- Digital output
- Low power consumption
- Excellent long-term stability
- SMD type package – re-flow solderable
Specifications
| Size | 7.5 x 4.9 x 2.6 mm |
| Output | digital (2-wire Interface) |
| Supply voltage range | 2.4 to 5.5 V |
| Energy consumption | 80µW (at 12bit, 3V, 1 measurements/ s) |
| RH operating range | 0 – 100% RH |
| T operating range | -40 to +125°C (-40 to +257°F) |
| RH response time | 8 sec (tau63%) |
Pinouts
| Pin Number | Pin Name | Description |
| 1 | GND | Ground |
| 2 | Data | Serial Data, bidirectional |
| 3 | SCK | Serial Clock, input only |
| 4 | VDD | Source voltage |
| NC | NC | Must be left unconnected |
Applications
The Weather Station
Due to the reasonable cost of this temperature sensor, we can use this in practical weather stations projects that can depict the environmental temperature and humidity which may help in various industries.
Automotive Industry
We can integrate temperature and Humidity sensors into HVAC systems to prevent the fogging of windscreens of vehicles and energy management. We can also place this sensor near the exhaust chamber to maintain the temperature.
Dehumidifiers
Dehumidifiers improve the humidity level in your home to ease problems caused by humid air and decrease the growth of pests such as fleas. Thus, AM2320 can be efficient and user-friendly to use in dehumidifiers.
Embedded systems
This Sensor is useful for the advancement of embedded systems for monitoring environmental parameters like humidity and temperature
