The DS18B20 is a 1-wire programmable Temperature sensor. Its main uses include measuring temperature in hard environments like in mines or soil etc. This temperature sensor can measure a wide range of temperature from -55°C to +125° with an accuracy of ±5°C.
It is a very good choice for measuring the temperature at multiple points without compromising your digital pins on the microcontroller.
Features
- It has a programmable alarm feature
- Programmable and digital temperature sensor
- The communication is done with the 1-Wire method
- The sensor can be power-driven from the data line
Pin Configuration
Following is the pin Configuration for the Sensor
- Pin1 (Ground): This pin connects to the GND terminal
- Pin2 (Vcc): This pin provides the power to the sensor (i.e Vcc voltage)
- Pin3 (Data): This data pin supplies the temperature value
Working Principle Of DS18B20 Temperature Sensor
The working principle of this DS18B20 temperature sensor is just like a normal temperature sensor. This sensor usually gets the power within a low power inactive condition. Thus, programming does help in both the temperature measurement and the conversion. The resulting temperature information is stored within the 2-byte register in the sensor.
Specifications
- conversion time is actually less than 750 ms
- Power Supply ranges from 3V to 5.5V
- Current Consumption: 1mA
- Temperature Range: -55 to 125°C
- Accuracy: ±0.5°C
- Resolution = 9 to 12 bit
Applications For DS18B20 Temperature Sensor
- Measures the liquid temperature
- In thermostatic Controls
- Industrial Systems
- In consumer Products
- In Thermometers
- Thermally Sensitive Systems
- In HVAC systems
