DS18B20

更新时间： 2024-01-22 10:03:07

品牌	Logo	应用领域
美信 - MAXIM		传感器换能器温度传感器输出元件
页数	文件大小	规格书
22页	243K
描述
1-Wire Digital Thermometer

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技术参数
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DS18B20 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	SOP8,.25
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	8 weeks
风险等级：	0.99	最大精度（摄氏度）：	0.5 Cel
其他特性：	COMPLIANCE TO MIL-150	主体宽度：	3.9 mm
主体高度：	1.55 mm	主体长度或直径：	4.9 mm
外壳：	PLASTIC	JESD-609代码：	e3
安装特点：	SURFACE MOUNT	位数：	12
端子数量：	8	最大工作电流：	1.5 mA
最高工作温度：	125 °C	最低工作温度：	-55 °C
输出接口类型：	1-WIRE INTERFACE	封装主体材料：	PLASTIC/EPOXY
封装等效代码：	SOP8,.25	封装形状/形式：	RECTANGULAR
电源：	3.3/5 V	传感器/换能器类型：	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL
子类别：	Other Sensors	最大供电电压：	5.5 V
最小供电电压：	3 V	表面贴装：	YES
端子面层：	Matte Tin (Sn)	端接类型：	SOLDER
Base Number Matches：	1

DS18B20 数据手册

DS18B20

Programmable Resolution

1-Wire Digital Thermometer

User-Definable Nonvolatile (NV) Alarm

Settings

Alarm Search Command Identifies and

Addresses Devices Whose Temperature is

Outside Programmed Limits (Temperature

Alarm Condition)

DESCRIPTION

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.

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

PIN CONFIGURATIONS

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.

MAXIM

18B20

N.C.

V_DD

N.C.

GND

1 2 3

SO (150 mils)

(DS18B20Z)

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

V_DD

N.C.

GND

N.C.

2 3

µSOP

(DS18B20U)

(BOTTOM VIEW)

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

TO-92

(DS18B20)

Converts Temperature to 12-Bit Digital Word in

750ms (Max)

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

1 of 22

REV: 042208

12 3 4 5 6 7...22

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与DS18B20相关器件

型号	品牌	描述	获取价格	数据表
DS18B20/GG8	MAXIM	Serial Switch/Digital Sensor, 12 Bit(s), 0.5Cel, Round, Through Hole Mount, TO-92, 3 PIN	获取价格
DS18B20/T&R	MAXIM	Serial Switch/Digital Sensor, 12 Bit(s), 0.50Cel, Rectangular, 3 Pin, Through Hole Mount,	获取价格
DS18B20_07	DALLAS	Programmable Resolution 1-Wire Digital Thermometer	获取价格
DS18B20_08	MAXIM	1-Wire Digital Thermometer	获取价格
DS18B20_08	DALLAS	Programmable Resolution 1-Wire Digital Thermometer	获取价格
DS18B20+	MAXIM	暂无描述	获取价格

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