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LM74_05 Datasheet

  • LM74_05

  • National Semiconductor [SPI/MICROWIRE⑩ 12-Bit Plus Sign Te...

  • NSC

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LM74 SPI/MICROWIRE 12-Bit Plus Sign Temperature Sensor
May 2005
LM74
SPI/MICROWIRE
鈩?/div>
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 碌A(chǔ). This mode is useful in systems where
low average power consumption is critical.
The LM74 has 12-bit plus sign temperature resolution
(0.0625藲C per LSB) while operating over a temperature
range of 鈭?5藲C to +150藲C.
The LM74鈥檚 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藲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
265碌A(chǔ) (typ)
520碌A(chǔ) (max)
3碌A(chǔ) (typ)
j
Temperature
Applications
n
n
n
n
System Thermal Management
Personal Computers
Disk Drives
Office Electronics
Accuracy
鈭?0藲C to 65藲C
鈭?5藲C to 110藲C
鈭?5藲C to 125藲C
鹵
1.25藲C(max)
鹵
2.1藲C(max)
鹵
3藲C(max)
Simplified Block Diagram
10090901
MICROWIRE
廬
is a registered trademark of National Semiconductor Corporation.
TRI-STATE
廬
is a registered trademark of National Semiconductor Corporation.
漏 2005 National Semiconductor Corporation
DS100909
www.national.com

LM74_05 PDF文件相關(guān)型號

LM74CITP-5,LM74CITPX-3

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