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LM94021 PDF预览

LM94021

更新时间: 2024-01-04 08:35:51
品牌 Logo 应用领域
美国国家半导体 - NSC 传感器温度传感器
页数 文件大小 规格书
13页 680K
描述
Multi-Gain Analog Temperature Sensor

LM94021 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Active包装说明:SC-70, 5 PIN
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:0.84Is Samacsys:N
最大精度(摄氏度):2.7 Cel其他特性:SHORT CIRCUIT PROTECTION
主体宽度:1.25 mm主体高度:0.95 mm
主体长度或直径:2 mm外壳:PLASTIC
JESD-609代码:e3安装特点:SURFACE MOUNT
端子数量:5最大工作电流:0.013 mA
最高工作温度:150 °C最低工作温度:-50 °C
封装主体材料:PLASTIC/EPOXY封装等效代码:TSSOP5/6,.08
封装形状/形式:RECTANGULAR电源:2/5 V
标称 R0:8 Ω筛选级别:AEC-Q100
传感器/换能器类型:TEMPERATURE SENSOR,ANALOG,VOLTAGE OUTPUT子类别:Other Sensors/Transducers
最大供电电压:5.5 V最小供电电压:1.5 V
表面贴装:YES技术:CMOS
端子面层:Matte Tin (Sn)端接类型:SOLDER
Base Number Matches:1

LM94021 数据手册

 浏览型号LM94021的Datasheet PDF文件第2页浏览型号LM94021的Datasheet PDF文件第3页浏览型号LM94021的Datasheet PDF文件第4页浏览型号LM94021的Datasheet PDF文件第5页浏览型号LM94021的Datasheet PDF文件第6页浏览型号LM94021的Datasheet PDF文件第7页 
February 2005  
LM94021  
Multi-Gain Analog Temperature Sensor  
n Disk Drives  
n Games  
n Appliances  
General Description  
The LM94021 is  
a precision analog output CMOS  
integrated-circuit temperature sensor that operates at a sup-  
ply voltage as low as 1.5V. While operating over the wide  
temperature range of −50˚C to +150˚C, the LM94021 deliv-  
ers an output voltage that is inversely porportional to mea-  
sured temperature. The LM94021’s low supply current  
makes it ideal for battery-powered systems as well as gen-  
eral temperature sensing applications.  
Features  
n Low 1.5V operation  
n Four selectable gains  
n Very accurate over wide temperature range of −50˚C to  
+150˚C  
Two logic inputs, Gain Select 1 (GS1) and Gain Select 0  
(GS0), select the gain of the temperature-to-voltage output  
transfer function. Four slopes are selectable: −5.5 mV/˚C,  
−8.2 mV/˚C, −10.9 mV/˚C, and −13.6 mV/˚C. In the lowest  
gain configuration (GS1 and GS0 both tied low), the  
LM94021 can operate with a 1.5V supply while measuring  
temperature over the full −50˚C to +150˚C operating range.  
Tying both inputs high causes the transfer function to have  
the largest gain of −13.6 mV/˚C for maximum temperature  
sensitivity. The gain-select inputs can be tied directly to VDD  
or Ground without any pull-up or pull-down resistors, reduc-  
ing component count and board area. These inputs can also  
be driven by logic signals allowing the system to optimize the  
gain during operation or system diagnostics.  
n Low quiescent current  
n Output is short-circuit protected  
n Extremely small SC70 package  
n Footprint compatible with the industry-standard LM20  
temperature sensor  
Key Specifications  
j
j
j
Supply Voltage  
Supply Current  
Temperature  
1.5V to 5.5V  
9 µA (typ)  
1.5˚C  
20˚C to 40˚C  
-50˚C to 70˚C  
-50˚C to 90˚C  
-50˚C to 150˚C  
Accuracy  
1.8˚C  
2.1˚C  
2.7˚C  
Applications  
n Cell phones  
n Wireless Transceivers  
n Battery Management  
n Automotive  
j
Operating  
Temperature  
−50˚C to 150˚C  
Connection Diagram  
Typical Transfer Characteristic  
SC70-5  
Output Voltage vs Temperature  
20108601  
Top View  
See NS Package Number MAA05A  
20108624  
© 2005 National Semiconductor Corporation  
DS201086  
www.national.com  

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