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LM84CIMQA PDF预览

LM84CIMQA

更新时间: 2024-09-13 22:47:03
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 171K
描述
Diode Input Digital Temperature Sensor with Two-Wire Interface

LM84CIMQA 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:SSOP16,.25Reach Compliance Code:unknown
风险等级:5.66最大精度(摄氏度):5 Cel
主体宽度:3.9 mm主体高度:1.72 mm
主体长度或直径:4.89 mm外壳:PLASTIC
JESD-609代码:e0安装特点:SURFACE MOUNT
位数:8端子数量:16
最大工作电流:0.5 mA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封装等效代码:SSOP16,.25
封装形状/形式:RECTANGULAR电源:3/3.6 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技术:CMOS
端子面层:Tin/Lead (Sn/Pb)端接类型:SOLDER
Base Number Matches:1

LM84CIMQA 数据手册

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July 2000  
LM84  
Diode Input Digital Temperature Sensor with Two-Wire  
Interface  
n Register readback capability  
n 7 bit plus sign temperature data format  
n 2 address select lines enable 9 LM84s to be connected  
to a single bus  
General Description  
The LM84 is  
a remote diode temperature sensor,  
Delta-Sigma analog-to-digital converter, and digital  
over-temperature detector with an SMBus interface. The  
LM84 senses its own temperature as well as the tempera-  
ture of a target IC with a diode junction, such as a Pentium®  
II processor or a diode connected 2N3904. A diode junction  
(semiconductor junction) is required on the target IC’s die. A  
host can query the LM84 at any time to read the temperature  
of this diode as well as the temperature state of the LM84  
itself. A T_CRIT_A interrupt output becomes active when the  
temperature is greater than a programmable comparator  
limit, T_CRIT.  
Key Specifications  
j
j
j
j
Supply Voltage  
3.0V - 3.6V  
1 mA (max)  
Supply Current  
±
Local Temperature Accuracy  
Remote Diode Temperature Accuracy  
+60˚C to +100˚C  
1.0˚C (typ)  
±
3˚C (max)  
5˚C (max)  
±
0˚C to +125˚C  
The host can program as well as read back the state of the  
T_CRIT register. Three state logic inputs allow two pins  
(ADD0, ADD1) to select up to 9 SMBus address locations for  
the LM84. The sensor powers up with default thresholds of  
127˚C for T_CRIT.  
Applications  
n System Thermal Management  
n Personal Computers  
n Electronic Test Equipment  
n Office Electronics  
Features  
n Directly senses die temperature of remote ICs  
n Senses temperature of remote diodes  
n SMBus compatible interface, supports SMBus Timeout  
n HVAC  
Simplified Block Diagram  
DS100961-1  
# Indicates Active Low (”NOT“)  
SMBus is a trademark of the Intel Corporation.  
Pentium® II processor is a registered trademark of the Intel Corporation.  
2
I
C® is a registered trademark of the Philips Corporation.  
© 2001 National Semiconductor Corporation  
DS100961  
www.national.com  

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