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One Wire Digital Temperature Sensor - DS18B20
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The DS18B20 is a digital temperature sensor from Maxim (now Analog Devices) that communicates over a 1-Wire bus. It reports temperature in degrees Celsius wi...
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The DS18B20 is a digital temperature sensor from Maxim (now Analog Devices) that communicates over a 1-Wire bus. It reports temperature in degrees Celsius with 9 to 12-bit configurable resolution. Each sensor has a unique 64-bit serial number, allowing multiple sensors to share a single data line.
Key Features
- Temperature Range – −55 °C to +125 °C
- Accuracy – ±0.5 °C (over −10 °C to +85 °C range)
- Resolution – Configurable 9 to 12 bits
- Interface – 1-Wire (single data line)
- Unique 64-Bit Serial – Multiple sensors on one bus
- Supply Voltage – 3.0 V to 5.5 V (also supports parasitic power mode)
- Package – TO-92 (3-pin through-hole)
Ideal For
- Data logging and environmental monitoring
- Temperature control systems
- Multi-sensor networks on a single data bus
- Arduino and Raspberry Pi projects
Package Contents
- 1× DS18B20 digital temperature sensor
Jargon buster
Plain-language definitions for the technical terms used above.
- 1-Wire
- 1-Wire is a communication method where devices share a single data line, often with each device having its own address. It matters because several temperature modules can be connected to one microcontroller pin instead of needing a separate pin for each probe.
- DS18B20
- The DS18B20 is a common digital temperature sensor, often supplied in a waterproof stainless-steel probe, that sends its readings to a microcontroller over a 1-Wire connection. It is a typical choice for adding temperature data to environmental or water-monitoring projects.
- through-hole
- A mounting style where the component leads pass through holes in a circuit board and are soldered on the other side. Through-hole parts are often easier to handle and solder by hand, which is useful for classroom and hobby projects.
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