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LM89-1CIMM

更新时间： 2024-02-11 03:49:22
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
20页 740K
描述
【0.75∑C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface

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LM89-1CIMM 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：ActiveReach Compliance Code：compliant
Factory Lead Time：6 weeks风险等级：1.37
最大精度（摄氏度）：3 Cel主体宽度：3 mm
主体高度：1.1 mm主体长度或直径：3 mm
外壳：PLASTICJESD-609代码：e3
安装特点：SURFACE MOUNT位数：11
最高工作温度：125 °C最低工作温度：
输出接口类型：2-WIRE INTERFACE封装主体材料：PLASTIC/EPOXY
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：Matte Tin (Sn)
端接类型：SOLDER

LM89-1CIMM 数据手册

 浏览型号LM89-1CIMM的Datasheet PDF文件第2页浏览型号LM89-1CIMM的Datasheet PDF文件第3页浏览型号LM89-1CIMM的Datasheet PDF文件第4页浏览型号LM89-1CIMM的Datasheet PDF文件第5页浏览型号LM89-1CIMM的Datasheet PDF文件第6页浏览型号LM89-1CIMM的Datasheet PDF文件第7页 
December 2004  
LM89  
0.75˚C Accurate, Remote Diode and Local Digital  
Temperature Sensor with Two-Wire Interface  
n Offset register allows sensing a variety of thermal  
diodes accurately  
General Description  
The LM89 is an 11-bit digital temperature sensor with a  
2-wire System Management Bus (SMBus) serial interface.  
The LM89 accurately measures its own temperature as well  
as the temperature of an external device, such as processor  
thermal diode or diode-connected transistor such as the  
2N3904. The temperature of any ASIC can be accurately  
determined using the LM89 as long as a dedicated diode  
(semiconductor junction) is available on the target die. The  
LM89 remote sensor accuracy of 0.75˚C is factory trimmed  
for the series resistance and 1.0021 typical non-ideality fac-  
n On-board local temperature sensing  
n 10 bit plus sign remote diode temperature data format,  
0.125 ˚C resolution  
n T_CRIT_A output useful for system shutdown  
n ALERT output supports SMBus 2.0 protocol  
n SMBus 2.0 compatible interface, supports TIMEOUT  
n 8-pin MSOP and SOIC packages  
Key Specifications  
tor of the Intel® Pentium 4 and the Mobile Pentium 4  
™
j
j
j
Processor-M thermal diode. The LM89 has an Offset  
register to allow measuring other diodes without  
requiring continuous software management. Contact  
Supply Voltage  
3.0 V to 3.6 V  
0.8 mA (typ)  
Supply Current  
Local Temp Accuracy (includes quantization error)  
@
hardware.monitor.team nsc.com to obtain the latest data for  
TA=25˚C to 125˚C  
3.0 ˚C (max)  
new processors.  
j
Remote Diode Temp Accuracy (includes quantization  
The LM89 and the LM89-1 have the same functions but  
different SMBus slave addresses. This allows for one of  
each to be on the bus at the same time.  
error)  
TA=30˚C,TD=80˚C  
0.75 ˚C (max)  
1.0 ˚C (max)  
3.0 ˚C (max)  
Activation of the ALERT output occurs when any tempera-  
ture goes outside a preprogrammed window set by the HIGH  
and LOW temperature limit registers or exceeds the T_CRIT  
temperature limit. Activation of the T_CRIT_A occurs when  
any temperature exceeds the T_CRIT programmed limit.  
The LM89 is pin and register compatible with the LM86,  
LM90, Analog Devices ADM1032 and Maxim MAX6657/8.  
TA=30˚C to 50˚C, TD=60˚C to 100˚C  
TA=0˚C to 85˚C, TD=25˚C to 125˚C  
Applications  
n Processor/Computer System Thermal Management  
(e.g. Laptop, Desktop, Workstations, Server)  
n Electronic Test Equipment  
Features  
n Office Electronics  
n Accurately senses die temperature of remote ICs or  
diode junctions  
Simplified Block Diagram  
20041501  
™
Pentium is a trademark of Intel Corporation.  
© 2004 National Semiconductor Corporation  
DS200415  
www.national.com  
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