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LM74CIM-5 Fiches technique(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
No de pièce LM74CIM-5
Description  SPI/MICROWIRE??Digital Temperature Sensor
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM74CIM-5 Fiches technique(HTML) 1 Page - National Semiconductor (TI)

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LM74
SPI/MICROWIRE12-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.
Applications
n
System Thermal Management
n
Personal Computers
n
Disk Drives
n
Office Electronics
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
3.0V or 2.65V to
5.5V
j Supply Current
operating
265µA (typ)
520µA (max)
shutdown
3µA (typ)
j Temperature
Accuracy
−10˚C to 65˚C
±1.25˚C(max)
−25˚C to 110˚C
±2.1˚C(max)
−55˚C to 125˚C
±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.
April 2003
© 2003 National Semiconductor Corporation
DS100909
www.national.com


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