374 ADAFRUIT | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 2
Technical content
DS18B20 Digital temperature sensor + extras Product ID: 374 ie hae a. 2 ta ee ee ee a Ui i: = ‘" Sy tor a a, digit ae ay ay a al ae
Description
These 1-wire digital temperature sensors are fairly precise (+0.5°C over much of the range) and can give up to 12 bits of precision from the onboard digital -to- analog converter. They work great with any microcontroller using a single digital pin, and you can even connect multiple ones to the same pin, each one has a unique 64-bit ID burned in at the factory to differentiate them. Usable with 3.0- 5.0V systems. The only downside is they use the Dallas 1-Wire protocol, which is somewhat
complex, and requires a bunch of code to parse out the communication. There's a great Arduino library for 1-Wire, but some microcontrollers do not have support for 1-Wire so be sure to check! We toss in a 4.7k resistor, which is required as a pullup from the DATA to VCC line when using the sensor. We don't have a detailed tutorial up yet but you can get started by using the Dallas Temperature Control Arduino library which requires also the OneWire Library. Technical Details Technical specs: « Usable temperature range: -55 to 125°C (-67°F to +257°F) « 9 to 12 bit selectable resolution « Uses 1-Wire interface- requires only one digital pin for communication « Unique 64 bit ID burned into chip « Multiple sensors can share one pin « +0.5°C Accuracy from -10°C to +85°C « Temperature-limit alarm system ¢ Query time is less than 750ms « Usable with 3.0V to 5.5V power/data Downloads: DS18B20 Datasheet TS Ts https://www.adafruit.com/product/374 6-16-23