DS18B20 Digital Temperature Sensor

Sepcifications

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

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

Multidrop capability simplifies distributed temperature sensing applications

Requires no external components

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

Measures temperatures from –55°C to +125°C (–67°F to +257°F)

±0.5°C accuracy from –10°C to +85°C

Thermometer resolution is user-selectable from 9 to 12 bits

Converts temperature to 12-bit digital word in 750ms (max.)

User-definable nonvolatile (NV) alarm settings

Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)

Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system