DS18B20 Datasheet – Temperature Sensor – Maxim

Part Number : DS18B20

Function : Programmable Resolution 1-Wire Digital Thermometer

Package : TO-92, uSOP 8pin type

Manufacturers : Maxim Integrated (formerly Dallas)

Image

ds18b20-temperature-sensor

Description

The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user programmable upper and lower trigger points.
The Device communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of -55°C to +125°C and is accurate to ±0.5°C over the range of -10°C to +85°C.
In addition, the Device can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply.

Pinout
DS18B20Z pinout datasheet

Features

1. Unique 1-Wire® interface requires only one port pin for communication

2. Each device has a unique 64-bit serial code stored in an onboard ROM

3. Multidrop capability simplifies distributed temperature sensing applications

4. Requires no external components

5. Can be powered from data line. Power supply range is 3.0V to 5.5V

 

Block Diagram

DS18B20 Datasheet block diagram

Reference Site

  1. http://www.hobbytronics.co.uk/ds18b20-arduino
  2. Maxim Official Homepage
  3. https://www.sparkfun.com/products/245

DS18B20 Datasheet

DS18B20Z pdf

Other data sheets within the file : DS18B20+, DS18B20+T&R, DS18B20-SL+T&R, DS18B20-SL/T&R