HomedatasheetDS18S20

DS18S20 Datasheet

High Precision 1-Wire® Digital Thermometer
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Description

DESCRIPTION
The DS18S20 Digital Thermometer provides 9–bit temperature readings which indicate the temperature of the device.
Information is sent to/from the DS18S20 over a 1–Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor to a DS18S20. 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 DS18S20 contains a unique silicon serial number, multiple DS18S20s 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.

FEATURES
■ Unique 1–Wire interface requires only one port pin for communication
■ 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
■ Zero standby power required
■ Measures temperatures from –55°C to +125°C. Fahrenheit equivalent is –67°F to +257°F
■ ±0.5°C accuracy from –10°C to +85°C
■ Temperature is read as a 9–bit digital value
■ Converts temperature to digital word in 750 ms (max.)
■ User–definable, nonvolatile temperature alarm settings
■ Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
■ Functionally compatible with DS1820 1-Wire digital thermometer
■ Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system

 

Features

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Manufacturer information

DALLAS SEMICONDUCTOR -> MAXIM INTEGRATED
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