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LM74CIMX-3/NOPB
?1.25?C Temperature Sensor with SPI Interface 8-SOIC -55 to 150
LM74
www.ti.com SNIS107K –MAY 2000–REVISED MARCH 2013
LM74 SPI/Microwire12-Bit Plus Sign Temperature Sensor
Checkfor Samples: LM74
1FEATURES DESCRIPTIONThe LM74isa temperature sensor, Delta-Sigma
0.0625°C Temperature Resolution analog-to-digital converter with an SPI and
• Shutdown Mode Conserves Power Between MICROWIRE compatible interface. The host can
Temperature Reading query the LM74at any timeto read temperature.A
SPI and MICROWIRE Bus Interface shutdown mode decreases power consumption to
less than 10 μA. This modeis usefulin systems
• 5-Bump DSBGA Package Saves Space where low average power consumptionis critical.
APPLICATIONS The LM74 has 12-bit plus sign temperature resolution
(0.0625°C per LSB) while operating over a
• System Thermal Management temperature rangeof −55°Cto +150°C.
• Personal Computers The LM74's 3.0Vto 5.5V supply voltage range, low
• Disk Drives supply current and simple SPI interface makeit ideal
• Office Electronics fora wide range of applications. These include
thermal management and protection applicationsin
• Electronic Test Equipmenthard disk drives, printers, electronic test equipment,
and office electronics. The LM74is availablein the
KEY SPECIFICATIONS SOIC package as well as the 5-Bump DSBGA
• Supply Voltage 3.0Vor 2.65Vto 5.5V package.
Supply Current
Block Diagram– Operating 265μA (typ) 520μA (max) Shutdown 3μA (typ) Temperature Accuracy −10°Cto 65°C, ±1.25°C(max) −25°Cto 110°C, ±2.1°C(max) −55°Cto 125°C, ±3°C(max)
Figure1.
