Technical summary
This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC (but sourced from Sparkfun). The DS18B20 measures temperature in degrees Celsius with 9 to 12-bit precision, -55C to 125C (+/-0.5C). Each sensor has a unique 64-bit serial number programmed into it, which allows a large number of sensors to be used on one data bus. The DS18B20 1-Wire digital temperature sensor is a wonderful part that is the cornerstone of many data-logging and temperature control projects.
Features of the DS18B20 Digital Temperature Sensor - 1-Wire:
- Unique 1-Wire® interface requires only one port pin for communication
- Each device has a unique 64-bit serial code stored in an on-board ROM
- Multidrop capability simplifies distributed temperature-sensing applications
- Requires no external components
- Can be powered from the 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 a 12-bit digital word in 750 ms (max.)
- User-definable non-volatile (NV) alarm settings
- Alarm search command identifies and addresses devices whose temperature is outside the programmed limits (alarm condition)
- Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system
Documents for the DS18B20 Digital Temperature Sensor - 1-Wire
