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DS18B20 Programmable Resolution 1-Wire Digital Thermometer (5-Pack) 12-bit resolution ↓ details & specifications
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Electronic Components
Mounting Style Through Hole
Microprocessors
Microprocessor Model DS18B20
Package
Package Type OEM
Dimensions us | metric
Depth 4 mm
Height 19 mm
Width 5 mm
Product Weight 0.1 g
FastTech
SKU 1011300
DATE LISTED 10/1/2012
Details:
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. 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 DS18B20 can derive power directly from the data line ("parasite power"), eliminating the need for an external power supply.

Each DS18B20 has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18B20s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment, or machinery, and process monitoring and control systems.

Key Features
  • 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 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 Programmed Limits (Temperature Alarm Condition)
  • Available in 8-Pin SO (150 mils), 8-Pin µSOP, and 3-Pin TO-92 Packages
  • Software Compatible with the DS1822
  • Applications Include Thermostatic Controls, Industrial Systems, Consumer Products, Thermometers, or Any Thermally Sensitive System
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mattcam3
Member

VERIFIED OWNER
  • JoinedApr 2013
  • Posts 7
  • Reviews 41
  • Kudos0
Overall
› Quality
› Value
PROS
- works great with arduino - can have multiple on same 1-wire bus
CONS
- only so-so repeatability - very small thermal mass
Great 1-wire temp sensor, allowing for multiple sensors on the same 1-wire bus. Putting all 5 next to eachother, there can be a +-1 degree spread though. Also, they have a very small thermal mass, so ... (read full review)
Reviewed on 2/29/2016 Was this review helpful to you? Yes / No

nts37140
Member

VERIFIED OWNER
  • JoinedOct 2014
  • Posts 0
  • Reviews 5
  • Kudos0
Overall
› Quality
› Value
All-in-one guide found in http://playground.arduino.cc/Learning/OneWire
Reviewed on 11/4/2014 Was this review helpful to you? Yes / No

dsobelman
Member

VERIFIED OWNER
  • JoinedMar 2014
  • Posts 3
  • Reviews 9
  • Kudos0
Overall
› Quality
› Value
PROS
Work great!
CONS
None
Not much to add, works great! Have several in use. Don't forget pull up resistor on data pin. 2 of them even survived momentary reverse polarity! (Got extremely hot!! still works, although slightly of... (read full review)
Reviewed on 5/19/2014 Was this review helpful to you? Yes / No

wyvern
Member

VERIFIED OWNER
  • JoinedFeb 2013
  • Posts 5
  • Reviews 107
  • Kudos2
Overall
› Quality
› Value
Perfect for DIY-projects. Popular simple accurate 1-wire sensor.
Reviewed on 2/20/2014 Was this review helpful to you? Yes / No

ss2013ss
Member

VERIFIED OWNER
  • JoinedMar 2013
  • Posts 0
  • Reviews 9
  • Kudos0
Overall
› Quality
› Value
CONS
Lower price always welcomed :)
Fast, easy and accurate enough way to measure temperature. It will require just one pin of MCU to drive. As I am PIC lover, I "married" pair of them already. Arduino lovers will be happy too. Works o... (read full review)
Reviewed on 12/17/2013 Was this review helpful to you? Yes / No
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