欢迎访问ic37.com |
会员登录 免费注册
发布采购

LM74CIM-3 参数 Datasheet PDF下载

LM74CIM-3图片预览
型号: LM74CIM-3
PDF下载: 下载PDF文件 查看货源
内容描述: SPI / MICROWIRE⑩数字温度传感器 [SPI/MICROWIRE⑩ Digital Temperature Sensor]
分类和应用: 传感器温度传感器
文件页数/大小: 15 页 / 291 K
品牌: NSC [ NATIONAL SEMICONDUCTOR ]
 浏览型号LM74CIM-3的Datasheet PDF文件第2页浏览型号LM74CIM-3的Datasheet PDF文件第3页浏览型号LM74CIM-3的Datasheet PDF文件第4页浏览型号LM74CIM-3的Datasheet PDF文件第5页浏览型号LM74CIM-3的Datasheet PDF文件第6页浏览型号LM74CIM-3的Datasheet PDF文件第7页浏览型号LM74CIM-3的Datasheet PDF文件第8页浏览型号LM74CIM-3的Datasheet PDF文件第9页  
LM74 SPI/MICROWIRE 12-Bit Plus Sign Temperature Sensor
April 2003
LM74
SPI/MICROWIRE
12-Bit Plus Sign Temperature Sensor
General Description
The LM74 is a temperature sensor, Delta-Sigma analog-to-
digital converter with an SPI and MICROWIRE compatible
interface. The host can query the LM74 at any time to read
temperature. A shutdown mode decreases power consump-
tion to less than 10 µA. This mode is useful in systems where
low average power consumption is critical.
The LM74 has 12-bit plus sign temperature resolution
(0.0625˚C per LSB) while operating over a temperature
range of −55˚C to +150˚C.
The LM74’s 3.0V to 5.5V supply voltage range, low supply
current and simple SPI interface make it ideal for a wide
range of applications. These include thermal management
and protection applications in hard disk drives, printers, elec-
tronic test equipment, and office electronics. The LM74 is
available in the SO-8 package as well as an 5-Bump micro
SMD package.
n
Electronic Test Equipment
Features
n
0.0625˚C temperature resolution.
n
Shutdown mode conserves power between temperature
reading
n
SPI and MICROWIRE Bus interface
n
5-Bump micro SMD package saves space
Key Specifications
j
Supply Voltage
j
Supply Current
3.0V or 2.65V to
5.5V
operating
shutdown
265µA (typ)
520µA (max)
3µA (typ)
j
Temperature
Applications
n
n
n
n
System Thermal Management
Personal Computers
Disk Drives
Office Electronics
Accuracy
−10˚C to 65˚C
−25˚C to 110˚C
−55˚C to 125˚C
±
1.25˚C(max)
±
2.1˚C(max)
±
3˚C(max)
Simplified Block Diagram
10090901
MICROWIRE
®
is a registered trademark of National Semiconductor Corporation.
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
© 2003 National Semiconductor Corporation
DS100909
www.national.com