18B20 Datasheet Programmable Resolution 1-Wire Digital Thermometer

Manufacturer: Maxim Integrated (now Analog Devices)

18B20 programmable resolution 1-wire digital thermometer by Maxim Integrated (now Analog Devices) - Datasheet Preview

Datasheet Details

Part number	18B20
Manufacturer	Maxim Integrated (now Analog Devices)
File Size	369.80 KB
Description	Programmable Resolution 1-Wire Digital Thermometer
Download	18B20 Download (PDF)

General 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 DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor.

In addition, the DS18B20 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply.

Overview

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DS18B20 Programmable Resolution 1-Wire Digital Thermometer.

Key Features

Unique 1-Wire® Interface Requires Only One Port Pin for Communication.
Reduce Component Count with Integrated Temperature Sensor and EEPROM.
Measures Temperatures from -55°C to +125°C (-67°F to +257°F).
±0.5°C Accuracy from -10°C to +85°C.
Programmable Resolution from 9 Bits to 12 Bits.
No External Components Required.
Parasitic Power Mode Requires Only 2 Pins for Operation (DQ and GND).
Simplifies Distributed Temperatu.

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