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LM95214CISD PDF预览

LM95214CISD

更新时间: 2024-01-07 16:40:37
品牌 Logo 应用领域
美国国家半导体 - NSC 二极管传感器温度传感器
页数 文件大小 规格书
38页 796K
描述
Quad Remote Diode and Local Temperature Sensor with SMBus Interface

LM95214CISD 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:LLP-14Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:7.21最大精度(摄氏度):2 Cel
主体宽度:2.6 mm主体高度:0.8 mm
主体长度或直径:3 mmJESD-609代码:e0
安装特点:SURFACE MOUNT位数:11
端子数量:14最大工作电流:0.57 mA
最高工作温度:140 °C最低工作温度:-40 °C
输出接口类型:2-WIRE INTERFACE封装主体材料:PLASTIC/EPOXY
封装等效代码:SOLCC14,.16,20封装形状/形式:RECTANGULAR
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

LM95214CISD 数据手册

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March 2007  
LM95214  
Quad Remote Diode and Local Temperature Sensor with  
SMBus Interface  
0.125°C LSb temperature resolution  
General Description  
0.03125°C LSb remote temperature resolution with digital  
LM95214 is an 11-bit digital temperature sensor with a 2-wire  
filter enabled  
System Management Bus (SMBus) interface that can very  
+127.875°C/–128°C and 0°C/255°C remote ranges  
accurately monitor the temperature of four remote diodes as  
Remote diode fault detection, model selection and offset  
correction  
Mask and status register support  
well as its own temperature. The four remote diodes can be  
external devices such as microprocessors, graphics proces-  
sors that target the ideality of a 2N3904 transistor or diode-  
connected 2N3904s.  
3 programmable TCRIT outputs with programmable  
shared hysteresis and Fault-Queue  
Programmable conversion rate and shutdown mode one-  
shot conversion control  
SMBus 2.0 compatible interface, supports TIMEOUT  
Three-level address pin  
The LM95214 reports temperature in two different formats for  
+127.875°C/–128°C range and 0°C/255°C range. The  
LM95214 TCRIT1, TCRIT2 and TCRIT3 outputs are triggered  
when any unmasked channel exceeds its corresponding pro-  
grammable limit and can be used to shutdown the system, to  
turn on the system fans or as a microcontroller interrupt func-  
tion. The current status of the TCRIT1, TCRIT2 and TCRIT3  
pins can be read back from the status registers. Mask regis-  
ters are available for further control of the TCRIT outputs.  
14-pin LLP package  
Key Specifications  
Two LM95214 remote temperature channels have pro-  
grammable digital filters while the other two remote channels  
utilize a fault-queue to minimize unwanted TCRIT events  
when temperature spikes are encountered.  
±2.0°C (max)  
±1.1°C (max)  
3.0V to 3.6V  
0.57 mA (typ)  
■ꢀLocal Temperature Accuracy  
■ꢀRemote Diode Temperature Accuracy  
■ꢀSupply Voltage  
■ꢀAverage Supply Current  
(1Hz conversion rate)  
For optimum flexibility and accuracy, each LM95214 channel  
includes registers for offset correction. A three-level address  
pin allows connection of up to 3 LM95214s to the same SM-  
Bus master. The LM95214 includes power saving functions  
such as: programmable conversion rate, shutdown mode,  
and disabling of unused channels.  
Applications  
Processor/Computer System Thermal Management  
(e.g. Laptop, Desktop, Workstations, Server)  
Features  
Electronic Test Equipment  
Office Electronics  
Accurately senses die temperature of 4 remote ICs or  
diode junctions and local temperature  
Programmable digital filters and analog front end filter  
Connection Diagram  
LLP-14  
30006101  
TOP VIEW  
Pentiumis a trademark of Intel Corporation.  
© 2007 National Semiconductor Corporation  
300061  
www.national.com  

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