Datasheet > LM74_05

LM74_05

更新时间： 2024-11-24 04:20:03

品牌	Logo	应用领域
美国国家半导体 - NSC		传感器温度传感器
页数	文件大小	规格书
15页	707K
描述
SPI/MICROWIRE⑩ 12-Bit Plus Sign Temperature Sensor

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LM74_05 数据手册

May 2005

LM74

™

SPI/MICROWIRE 12-Bit Plus Sign Temperature Sensor

General Description

The LM74 is a temperature sensor, Delta-Sigma analog-to-

n Electronic Test Equipment

Features

digital converter with an SPI and MICROWIRE compatible

n 0.0625˚C temperature resolution.

n Shutdown mode conserves power between temperature

reading

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.

n SPI and MICROWIRE Bus interface

n 5-Bump micro SMD package saves space

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.

Key Specifications

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.

Supply Voltage

3.0V or 2.65V to

5.5V

Supply Current

operating

shutdown

265µA (typ)

520µA (max)

3µA (typ)

Temperature

Accuracy

−10˚C to 65˚C

−25˚C to 110˚C

−55˚C to 125˚C

1.25˚C(max)

2.1˚C(max)

3˚C(max)

Applications

n System Thermal Management

n Personal Computers

n Disk Drives

n Office Electronics

Simplified Block Diagram

10090901

MICROWIRE^®is a registered trademark of National Semiconductor Corporation.

TRI-STATE^®is a registered trademark of National Semiconductor Corporation.

DS100909

www.national.com

12 3 4 5 6 7...15

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