Digital Temperature Sensor DS18B20 Temperature Sensor
The DS18B20 is a digital temperature sensor which is widely used in various applications for measuring temperature due to its accuracy, ease of use, and the fact that it can be connected directly to a microcontroller or computer over a single-wire interface.
- Key Features of the DS18B20:
Accuracy: ±0.5°C from -10°C to +85°C.
Resolution: Configurable, typically between 9 and 12 bits, which corresponds to increments of 0.5°C, 0.25°C, 0.125°C, and 0.0625°C respectively.
Operating Voltage Range: 3.0V to 5.5V (it can also operate in parasite power mode, where it draws power from the data line).
Temperature Range: -55°C to +125°C.
Communication Protocol: 1-Wire, which means only one wire (plus ground) is needed to communicate with the device.
Multiple Sensors on One Bus: Multiple DS18B20 sensors can be connected to the same 1-Wire bus, each identified by a unique 64-bit serial code.
| No. |
Item |
Value |
| 1 |
Temperature range |
-55°C to +80°C |
Environmental monitoring systems.
HVAC (Heating, Ventilation, and Air Conditioning) systems.
Industrial control systems.
Home automation.
Weather stations.
Refrigeration and freezer monitoring.
Automotive temperature sensing.
How to Use:
To use the DS18B20, you need to connect it to a microcontroller or a computer that supports 1-Wire communication. The connections are usually as follows:
VDD (Pin 1): Power supply voltage (3.0V to 5.5V).
GND (Pin 2): Ground.
DQ (Pin 3): Data input/output line for 1-Wire communication.
When using the sensor, you will typically write a program that initializes the 1-Wire bus, sends commands to the DS18B20 to start a conversion, waits for the conversion to complete, and then reads the temperature value.
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