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LM95231BIMMX PDF预览

LM95231BIMMX

更新时间： 2024-11-24 03:51:39
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 705K
描述
Precision Dual Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology

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LM95231BIMMX 技术参数

是否Rohs认证：不符合生命周期：Transferred
包装说明：TSSOP8,.19Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.47Is Samacsys：N
最大精度（摄氏度）：0.75 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：13
端子数量：8最大工作电流：0.4 mA
最高工作温度：85 °C最低工作温度：
输出接口类型：2-WIRE INTERFACE封装主体材料：PLASTIC/EPOXY
封装等效代码：TSSOP8,.19封装形状/形式：SQUARE
电源：3.3 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：3.6 V
最小供电电压：3 V表面贴装：YES
端子面层：Tin/Lead (Sn/Pb)端接类型：SOLDER
Base Number Matches：1

LM95231BIMMX 数据手册

 浏览型号LM95231BIMMX的Datasheet PDF文件第2页浏览型号LM95231BIMMX的Datasheet PDF文件第3页浏览型号LM95231BIMMX的Datasheet PDF文件第4页浏览型号LM95231BIMMX的Datasheet PDF文件第5页浏览型号LM95231BIMMX的Datasheet PDF文件第6页浏览型号LM95231BIMMX的Datasheet PDF文件第7页 
August 2006  
LM95231  
Precision Dual Remote Diode Temperature Sensor with  
™
SMBus Interface and TruTherm Technology  
n Remote diode fault detection  
n On-board local temperature sensing  
n Remote temperature readings without digital filtering:  
General Description  
The LM95231 is a precision dual remote diode temperature  
sensor (RDTS) that uses National’s TruTherm technology.  
The 2-wire serial interface of the LM95231 is compatible with  
SMBus 2.0. The LM95231 can sense three temperature  
zones, it can measure the temperature of its own die as well  
as two diode connected transistors. The LM95231 includes  
digital filtering and an advanced input stage that includes  
analog filtering and TruTherm technology that reduces  
processor-to-processor non-ideality spread. The diode con-  
nected transistors can be a “thermal diode” as found in Intel  
and AMD processors or can simply be a diode connected  
MMBT3904 transistor. TruTherm technology allows accurate  
measurement of “thermal diodes” found on small geometry  
processes, 90nm and below. The LM95231 supports user  
— 0.125 ˚C LSb  
— 10-bits plus sign or 11-bits programmable resolution  
— 11-bits resolves temperatures above 127 ˚C  
n Remote temperature readings with digital filtering:  
— 0.03125 ˚C LSb with filtering  
— 12-bits plus sign or 13-bits programmable resolution  
— 13-bits resolves temperatures above 127 ˚C  
n Local temperature readings:  
— 0.25 ˚C  
— 9-bits plus sign  
n Status register support  
n Programmable conversion rate allows user optimization  
of power consumption  
selectable thermal diode non-ideality of either a Pentium®  
processor on 90nm process or 2N3904.  
4
n Shutdown mode one-shot conversion control  
n SMBus 2.0 compatible interface, supports TIMEOUT  
n 8-pin MSOP package  
The LM95231 resolution format for remote temperature  
readings can be programmed to be 11-bits signed or un-  
signed with the digital filtering disabled. When the filtering is  
enabled the resolution increases to 13-bits signed or un-  
signed. In the unsigned mode the LM95231 remote diode  
readings can resolve temperatures above 127˚C. Local tem-  
perature readings have a resolution of 9-bits plus sign.  
Key Specifications  
j
j
j
j
Remote Temperature Accuracy  
Local Temperature Accuracy  
Supply Voltage  
0.75˚C (max)  
3.0˚C (max)  
3.0V to 3.6V  
402µA (typ)  
Features  
Supply Current  
n Accurately senses die temperature of remote ICs or  
diode junctions  
n Uses TruTherm technology for precision “thermal diode”  
temperature measurement  
n Thermal diode input stage with analog filtering  
n Thermal diode digital filtering  
n Intel Pentium 4 processor on 90nm process or 2N3904  
non-ideality selection  
Applications  
n Processor/Computer System Thermal Management  
(e.g. Laptop, Desktop, Workstations, Server)  
n Electronic Test Equipment  
n Office Electronics  
Connection Diagram  
MSOP-8  
20120202  
TOP VIEW  
™
TruTherm is a trademark of National Semiconductor Corporation.  
I2C® is a registered trademark of Philips Corporation.  
Pentium® is a registered trademark of Intel Corporation.  
© 2006 National Semiconductor Corporation  
DS201202  
www.national.com  
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