Detailed Product Description

DS18b20 Digital sensor :
1.Multidrop capability simplifies distributed
2.Zero standby power required
3.ISO,ROHS,SGS

 

DS18b20 Digital Sensor :

 

Unique 1-Wire interface requires only one

port pin for communication

 

1.Multidrop capability simplifies distributed

temperature sensing applications

 

2.Requires no external components

 

3.Can be powered from data line. Power supply

range is 3.0V to 5.5V

 

4.Zero standby power required

 

5.Measures temperatures from -55°C to

+125°C. Fahrenheit equivalent is -67°F to

+257°F

 

6.±0.5°C accuracy from -10°C to +85°C

 

7.Thermometer resolution is programmable

from 9 to 12 bits

 

8.Converts 12-bit temperature to digital word in

750 ms (max.)

 

9.User-definable, nonvolatile temperature alarm

settings DS18B20Z

 

10.Alarm search command identifies and 8-Pin SOIC (150 mil)

addresses devices whose temperature is

outside of programmed limits (temperature PIN DESCRIPTION

alarm condition)

 

11.Applications include thermostatic controls, DQ - Data In/Out

industrial systems, consumer products, VDD - Power Supply Voltage

thermometers, or any thermally sensitive NC - No Connect

system

The DS18B20 Digital Thermometer provides 9 to 12-bit (configurable) temperature readings which indicate the temperature of the device. Information is sent to/from the DS18B20 over a 1-Wire interface, so that only one wire (and ground)

needs to be connected from a central microprocessor to a DS18B20. Power for reading, writing, and

performing temperature conversions can be derived from the data line itself with no need for an external

power source.

 

Because each DS18B20 contains a unique silicon serial number, multiple DS18B20s can exist on the

same 1-Wire bus. This allows for placing temperature sensors in many different places. Applications

where this feature is useful include HVAC environmental controls, sensing temperatures inside buildings,equipment or machinery, and process monitoring and control.