Datasheet > DS1822/T&R

DS1822/T&R

更新时间： 2022-05-14 22:20:11

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
21页	252K
描述
Econo 1-Wire Digital Thermometer

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DS1822/T&R 数据手册

DS1822

Econo 1-Wire Digital

Thermometer

BENEFITS AND FEATURES

• Unique 1-Wire^®Interface Requires Only One

Port Pin for Communications

PIN ASSIGNMENT

DALLAS

1822

V_DD

o Can Be Powered from Data Line

o Power-Supply Range is 3.0V to 5.5V

1 2 3

• Reduced Component Count with Integrated

Temperature Sensor and Interface

o Requires No External Components

o Measures temperatures from -55°C to

+125°C (-67°F to +257°F)

GND

8-Pin 150mil SO

(DS1822Z)

o ±2.0°C Accuracy from -10°C to +85°C

o Thermometer Resolution is User-Selectable

from 9 to 12 Bits

o Converts Temperature to 12-Bit Digital Word

in 750ms (max)

• Simplifies Distributed Temperature Sensing

with Multidrop Capability

o Each Device Has a Unique 64-Bit Serial

Code Stored in an On-Board Device

(BOTTOM VIEW)

o Flexible, User-Definable Nonvolatile

(NV) Alarm Settings with Alarm Search

Command Identifies Devices with

TO-92

(DS1822)

Temperatures

Limits

o Software compatible with the DS18B20

Outside

Programmed

PIN DESCRIPTION

GND - Ground

• Applications Include Thermostatic Controls,

Industrial Systems, Consumer Products,

Thermometers, or Any Thermally Sensitive

System

V_DD- Power Supply Voltage

NC - No Connect

- Data In/Out

DESCRIPTION

The DS1822 digital thermometer provides 9- to 12-bit centigrade temperature measurements and has an

alarm function with NV user-programmable upper and lower trigger points. The DS1822 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

±2.0°C over the range of –10°C to +85°C. In addition, the DS1822 can derive power directly from the

data line (“parasite power”), eliminating the need for an external power supply.

Each DS1822 has a unique 64-bit serial code, which allows multiple DS1822s to function on the 1-Wire

bus; thus, it is simple to use one microprocessor to control many DS1822s 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 Maxim Integrated Products,

Inc.

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DS1822_V01	MAXIM	Econo 1-Wire Digital Thermometer	获取价格
DS1822+	MAXIM	Econo 1-Wire Digital Thermometer	获取价格
DS1822+PAR	MAXIM	Serial Switch/Digital Sensor, 12 Bit(s), 2Cel, Rectangular, 3 Pin, Through Hole Mount, TO-	获取价格
DS1822+T	MAXIM	Econo 1-Wire Digital Thermometer	获取价格
DS1822+T&R	MAXIM	Econo 1-Wire Digital Thermometer	获取价格
DS1822-PAR	DALLAS	Econo 1-Wire?? Parasite-Power Digital Thermometer	获取价格