LM74

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SNIS107K – MAY 2000 – REVISED MARCH 2013

LM74 SPI/Microwire12-Bit Plus Sign Temperature Sensor

Check for Samples: LM74

1

FEATURES

DESCRIPTION

The LM74 is a temperature sensor, Delta-Sigma

2

•

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 LM74 at any time to read temperature. A

•

SPI and MICROWIRE Bus Interface

shutdown mode decreases power consumption to

less than 10

μA. This mode is useful in systems

•

5-Bump DSBGA Package Saves Space

where low average power consumption is critical.

APPLICATIONS

The LM74 has 12-bit plus sign temperature resolution

(0.0625°C

per

LSB)

while

operating

over

a

•

System Thermal Management

temperature range of

−55°C to +150°C.

•

Personal Computers

The LM74's 3.0V to 5.5V supply voltage range, low

•

Disk Drives

supply current and simple SPI interface make it ideal

•

Office Electronics

for a wide range of applications. These include

thermal management and protection applications in

•

Electronic Test Equipment

hard disk drives, printers, electronic test equipment,

and office electronics. The LM74 is available in the

KEY SPECIFICATIONS

SOIC package as well as the 5-Bump DSBGA

•

Supply Voltage 3.0V or 2.65V to 5.5V

package.

•

Supply Current

Block Diagram

–

Operating

–

265

μA (typ)

–

520

μA (max)

–

Shutdown

–

3

μA (typ)

•

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)

Figure 1.

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2000–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.