Datasheet > DS18S20-PAR

DS18S20-PAR

更新时间： 2023-12-20 18:44:36

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	250K
描述
寄生供电数字温度计

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数据手册

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DS18S20-PAR 数据手册

DS18S20-PAR

1-Wire Parasite-Power

Digital Thermometer

www.maxim-ic.com

FEATURES

PIN ASSIGNMENT

S Unique 1-Wire^®interface requires only one

port pin for communication

DALLAS

18S20P

S Derives power from data line (“parasite

power”)—does not need a local power supply

S Multi-drop capability simplifies distributed

temperature sensing applications

1 2 3

S Requires no external components

S M0.5LC accuracy from –10°C to +85°C

S Measures temperatures from –55°C to

+100°C (–67°F to +212°F)

S 9-bit thermometer resolution

S Converts temperature in 750 ms (max.)

S User–definable non-volatile temperature

alarm settings

S Alarm search command identifies and

addresses devices whose temperature is

outside of programmed limits (temperature

alarm condition)

S Ideal for use in remote sensing applications

(e.g., temperature probes) that do not have a

local power source

(BOTTOM VIEW)

TO-92

(DS18S20-PAR)

PIN DESCRIPTION

GND - Ground

- Data In/Out

- No Connect

DESCRIPTION

The DS18S20-PAR digital thermometer provides 9–bit centigrade temperature measurements and has an

alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18S20-PAR

does not need an external power supply because it derives power directly from the data line (“parasite

power”). The DS18S20-PAR communicates over a 1-Wire bus, which 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 +100°C and is accurate to M0.5LC over a range of –10°C to +85°C.

Each DS18S20-PAR has a unique 64-bit identification code, which allows multiple DS18S20-PARs to

function on the same 1–wire bus; thus, it is simple to use one microprocessor to control many

DS18S20-PARs 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.

1-Wire is a registered trademark of Dallas Semiconductor.

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