DS1820

更新时间： 2024-01-08 02:35:37

品牌	Logo	应用领域
达拉斯 - DALLAS		传感器换能器温度传感器输出元件
页数	文件大小	规格书
27页	155K
描述
1-Wire Digital Thermometer

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技术参数
数据手册

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DS1820 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
Reach Compliance Code：	unknown	风险等级：	5.78
最大精度（摄氏度）：	2 Cel	外壳：	PLASTIC
JESD-609代码：	e0	安装特点：	SURFACE MOUNT
位数：	9	端子数量：	16
最大工作电流：	1 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：	SSOP16,.3
封装形状/形式：	RECTANGULAR	电源：	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：	2.8 V
表面贴装：	YES	端子面层：	Tin/Lead (Sn/Pb)
端接类型：	SOLDER	Base Number Matches：	1

DS1820 数据手册

DS1820

1–Wire^TMDigital Thermometer

FEATURES

PIN ASSIGNMENT

• Unique 1–Wire interface requires only one port pin

for communication

DALLAS

DS1820

DS2434

• Multidropcapabilitysimplifiesdistributedtemperature

sensing applications

BOTTOM VIEW

• Requires no external components

• Can be powered from data line

• Zero standby power required

2 3

VDD

GND

• Measures temperatures from –55°C to +125°C in

0.5°C increments. Fahrenheit equivalent is –67°F to

+257°F in 0.9°F increments

• Temperature is read as a 9–bit digital value.

DS1820

DS1820S

• Converts temperature to digital word in 200 ms (typ.)

PR35 PACKAGE

See Mech. Drawings

Section

16–PIN SSOP

See Mech. Drawings

Section

• User–definable, nonvolatile temperature alarm set-

tings

PIN DESCRIPTION

• Alarm search command identifies and addresses

devices whose temperature is outside of pro-

grammed limits (temperature alarm condition)

GND

–

Ground

Data In/Out

Optional V

• Applications include thermostatic controls, industrial

systems, consumer products, thermometers, or any

thermally sensitive system

No Connect

DESCRIPTION

The DS1820 Digital Thermometer provides 9–bit tem-

perature readings which indicate the temperature of the

device.

Because each DS1820 contains a unique silicon serial

number, multiple DS1820s can exist on the same

1–Wire bus. This allows for placing temperature sen-

sors in many different places. Applications where this

feature is useful include HVAC environmental controls,

sensing temperatures inside buildings, equipment or

machinery, and in process monitoring and control.

Information is sent to/from the DS1820 over a 1–Wire

interface, sothatonlyonewire(andground)needstobe

connected from a central microprocessor to a DS1820.

Power for reading, writing, and performing temperature

conversions can be derived from the data line itself with

no need for an external power source.

030598 1/27

12 3 4 5 6 7...27

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