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LM95221CIMMX PDF预览

LM95221CIMMX

更新时间： 2024-09-09 22:35:23
品牌 Logo 应用领域
美国国家半导体 - NSC 二极管传感器换能器温度传感器输出元件
页数 文件大小 规格书
16页 279K
描述
Dual Remote Diode Digital Temperature Sensor with SMBus Interface

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中文翻译

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LM95221CIMMX 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：MO-187, MSOP-8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.52Is Samacsys：N
最大精度（摄氏度）：3 Cel主体宽度：3 mm
主体高度：0.86 mm主体长度或直径：3 mm
外壳：PLASTICJESD-609代码：e0
安装特点：SURFACE MOUNT位数：11
最大工作电流：2 mA最高工作温度：85 °C
最低工作温度：输出接口类型：2-WIRE INTERFACE
封装形状/形式：SQUARE传感器/换能器类型：TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL
最大供电电压：3.6 V最小供电电压：3 V
表面贴装：YES端子面层：Tin/Lead (Sn85Pb15)
端接类型：SOLDERBase Number Matches：1

LM95221CIMMX 数据手册

 浏览型号LM95221CIMMX的Datasheet PDF文件第2页浏览型号LM95221CIMMX的Datasheet PDF文件第3页浏览型号LM95221CIMMX的Datasheet PDF文件第4页浏览型号LM95221CIMMX的Datasheet PDF文件第5页浏览型号LM95221CIMMX的Datasheet PDF文件第6页浏览型号LM95221CIMMX的Datasheet PDF文件第7页 
May 2004  
LM95221  
Dual Remote Diode Digital Temperature Sensor with  
SMBus Interface  
— 11-bits resolves temperatures above 127 ˚C  
n Local temperature readings:  
General Description  
The LM95221 is a dual remote diode temperature sensor in  
— 0.25 ˚C  
an 8-lead MSOP package. The 2-wire serial interface of the  
— 9-bits plus sign  
LM95221 is compatible with SMBus 2.0. The LM95221 can  
sense three temperature zones, it can measure the tempera-  
n Status register support  
n Programmable conversion rate allows user optimization  
of power consumption  
n Shutdown mode one-shot conversion control  
n SMBus 2.0 compatible interface, supports TIMEOUT  
n 8-pin MSOP package  
ture of its own die as well as two diode connected transis-  
tors. The diode connected transistors can be a thermal diode  
as found in Pentium and AMD processors or can simply be a  
diode connected MMBT3904 transistor. The LM95221 reso-  
lution format for remote temperature readings can be pro-  
grammed to be 10-bits plus sign or 11-bits unsigned. In the  
unsigned mode the LM95221 remote diode readings can  
resolve temperatures above 127˚C. Local temperature read-  
ings have a resolution of 9-bits plus sign.  
Key Specifications  
j
Local Temperature Accuracy  
The temperature of any ASIC can be accurately determined  
using the LM95221 as long as a dedicated diode (semicon-  
ductor junction) is available on the target die. The LM95221  
remote sensor accuracy of 1˚C is factory trimmed for a  
series resistance of 2.7 ohms and 1.008 non-ideality factor.  
TA=0˚C to 85˚C  
3.0 ˚C (max)  
j
Remote Diode Temperature Accuracy  
TA=30˚C to 50˚C, TD=45˚C to 85˚C  
TA=0˚C to 85˚C, TD=25˚C to 140˚C  
Supply Voltage  
1.0 ˚C (max)  
3.0 ˚C (max)  
3.0 V to 3.6 V  
2 mA (typ)  
j
j
Features  
Supply Current  
n Accurately senses die temperature of remote ICs or  
diode junctions  
Applications  
n Remote diode fault detection  
n Processor/Computer System Thermal Management  
(e.g. Laptop, Desktop, Workstations, Server)  
n Electronic Test Equipment  
n On-board local temperature sensing  
n Remote temperature readings:  
— 0.125 ˚C LSb  
n Office Electronics  
— 10-bits plus sign or 11-bits programmable resolution  
Simplified Block Diagram  
20094301  
™
Pentium is a trademark of Intel Corporation.  
© 2004 National Semiconductor Corporation  
DS200943  
www.national.com  
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