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LM70_06 Datasheet

  • LM70_06

  • National Semiconductor [SPI/MICROWIRE 10-Bit plus Sign Digi...

  • 691.82KB

  • NSC

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LM70 SPI/MICROWIRE
鈩?/div>
10-Bit plus Sign Digital Temperature Sensor
February 2006
LM70
SPI/MICROWIRE 10-Bit plus Sign Digital Temperature
Sensor
General Description
The LM70 is a temperature sensor, Delta-Sigma analog-to-
digital converter with an SPI and MICROWIRE compatible
interface available in LLP and MSOP 8-pin packages. The
host can query the LM70 at any time to read temperature. A
shutdown mode decreases power consumption to less than
10 碌A(chǔ). This mode is useful in systems where low average
power consumption is critical.
The LM70 has 10-bit plus sign temperature resolution
(0.25藲C per LSB) while operating over a temperature range
of 鈭?5藲C to +150藲C.
The LM70鈥檚 2.65V 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.
Features
n
0.25藲C temperature resolution.
n
Shutdown mode conserves power between temperature
reading
n
SPI and MICROWIRE Bus interface
n
MSOP-8 and LLP-8 packages save space
n
UL Recognized Component
Key Specifications
j
Supply Voltage
j
Supply Current
2.65V to 5.5V
operating
shutdown
260 碌A(chǔ) (typ)
490 碌A(chǔ) (max)
12 碌A(chǔ) (typ)
j
Temperature
鈭?0藲C to 85藲C
鈭?0藲C to 65藲C
鈭?5藲C to 125藲C
鈭?5藲C to 150藲C
鹵
2藲C(max)
+1.5/鈭?藲C(max)
+3/鈭?藲C(max)
+3.5/鈭?藲C(max)
Applications
n
n
n
n
n
System Thermal Management
Personal Computers
Disk Drives
Office Electronics
Electronic Test Equipment
Accuracy
Simplified Block Diagram
10122301
漏 2006 National Semiconductor Corporation
DS101223
www.national.com

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