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DS1821 PDF预览

DS1821

更新时间: 2024-11-24 12:20:59
品牌 Logo 应用领域
美信 - MAXIM 传感器换能器温度传感器监控
页数 文件大小 规格书
19页 800K
描述
Programmable Digital Thermostat and Thermometer

DS1821 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete包装说明:PR-35, 3 PIN
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.79
Is Samacsys:N最大精度(摄氏度):1 Cel
主体宽度:3.04 mm主体高度:8.89 mm
主体长度或直径:4.57 mm外壳:PLASTIC
JESD-609代码:e0安装特点:SURFACE MOUNT
位数:8端子数量:3
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:SIP3,.1,50
封装形状/形式:RECTANGULAR电源: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:2.7 V
表面贴装:YES端子面层:Tin/Lead (Sn/Pb)
端接类型:SOLDERBase Number Matches:1

DS1821 数据手册

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19-6322; Rev 6/12  
DS1821  
Programmable Digital Thermostat and Thermometer  
FEATURES  
PIN ASSIGNMENT  
. Requires no external components  
. Unique 1-Wire® interface requires only one  
port pin for communication  
. Operates over a -55°C to +125°C (-67°F to  
+257°F) temperature range  
8
7
6
5
1
2
DQ  
VDD  
DS1821  
GND  
NC  
NC  
NC  
NC  
3
4
1 2 3  
. Functions as a standalone thermostat with  
user-definable trip-points  
NC  
. Provides 8-bit (1°C resolution) centigrade  
temperature measurements  
. Accuracy is ±1°C over 0°C to +85°C range  
. Converts temperature to a digital word in  
1 second (max)  
8-pin 208-mil SO  
(DS1821S)  
. Available in 3-pin TO92 and 8-pin SO  
packages  
. Applications include thermostatic controls,  
industrial systems, consumer products,  
thermometers, or any thermally sensitive  
system  
1
2
3
(BOTTOM VIEW)  
TO92  
(DS1821C)  
PIN DESCRIPTION  
GND  
DQ  
VDD  
NC  
- Ground  
- Data In/Out and Thermostat Output  
- Power Supply Voltage  
- No Connect  
1-Wire is a registered trademark of Maxim Integrated  
Products, Inc.  
DESCRIPTION  
The DS1821 can function as a standalone thermostat with user-programmable trip-points or as 8-bit  
temperature sensor with a 1-Wire digital interface. The thermostat trip-points are stored in nonvolatile  
memory, so DS1821 units can be programmed prior to system insertion for true standalone operation.  
The DS1821 has an operating temperature range of –55°C to +125°C and is accurate to ±1°C over a range  
of 0°C to +85°C. Communication with the DS1821 is accomplished through the open-drain DQ pin; this  
pin also serves as the thermostat output.  
1 of 19  

DS1821 替代型号

型号 品牌 替代类型 描述 数据表
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