Datasheet > LM74

LM74

更新时间： 2024-11-21 11:07:55

品牌	Logo	应用领域
德州仪器 - TI		温度传感传感器温度传感器
页数	文件大小	规格书
22页	1183K
描述
具有 SPI 接口的 ±1.25°C 温度传感器

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LM74 数据手册

LM74

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SNIS107K –MAY 2000–REVISED MARCH 2013

LM74 SPI/Microwire12-Bit Plus Sign Temperature Sensor

Check for Samples: LM74

FEATURES

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 consumption to

less than 10 μA. This mode is useful in systems

where low average power consumption is critical.

•

0.0625°C Temperature Resolution

Shutdown Mode Conserves Power Between

Temperature Reading

•

SPI and MICROWIRE Bus Interface

5-Bump DSBGA Package Saves Space

APPLICATIONS

The LM74 has 12-bit plus sign temperature resolution

(0.0625°C per LSB) while operating over

•

System Thermal Management

Personal Computers

Disk Drives

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, electronic test equipment,

and office electronics. The LM74 is available in the

SOIC package as well as the 5-Bump DSBGA

package.

Office Electronics

Electronic Test Equipment

KEY SPECIFICATIONS

•

Supply Voltage 3.0V or 2.65V to 5.5V

Supply Current

Block Diagram

–

Operating

–

265μA (typ)

520μA (max)

–

Shutdown

3μA (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.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

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

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...22

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