National Semiconductor Introduces Industry's First 1.5V Analog Temp Sensors with Selectable Gains, Enabling Increased Performance in Low-voltage Systems

1.5V LM94021 and LM94022 are Operational from -50 Degrees C to 150 Degrees C

SANTA CLARA, Calif., June 27 /PRNewswire-FirstCall/ -- National Semiconductor Corporation (NYSE: NSM) today introduced the industry's first 1.5V analog temperature sensors with user-selectable gains, which increase thermal management performance in low-voltage systems. The LM94021 and LM94022 have four user-selectable gains and monitor temperature from -50 degrees Celsius (C) to 150 degrees C. These temperature sensors' wide range of operation, flexibility and low-power performance make them well-suited for low-voltage, battery-powered systems such as cellular phones, PDAs, MP3 players and digital cameras.

"National's pioneering thermal management innovations set the standard for temperature accuracy, performance over temperature and packaging," said Andrew Jue, director of product marketing for National Semiconductor's Data Conversion Division. "The LM94021 and LM94022 continue this level of innovation and offer our customers a more efficient way to manage thermal performance."

About the LM94021 and LM94022

The LM94021 and LM94022 are precision analog-output CMOS temperature sensors that operate from a supply voltage between 1.5V and 5.5V. They deliver an output voltage that is inversely proportional to measured temperature, for higher sensitivity at elevated temperatures. Users can select one of four programmable gain options: -5.5 mV per degrees C, -8.2 mV per degrees C, -10.9 mV per degrees C or -13.6 mV per degrees C. The LM94021 and LM94022 feature low quiescent currents of 9 uA and 5.4 uA, respectively. These sensors come in the extremely small SC70 package and are footprint-compatible with National's industry-standard LM20 temperature sensor.

Pricing and Availability

    The LM94021 and LM94022 are priced at 40 cents each in 1,000-unit
quantities. More information is available at

http://www.national.com/pf/LM/LM94021.html and

http://www.national.com/pf/LM/LM94022.html .

About National Semiconductor

National Semiconductor, the industry's premier analog company, creates high performance analog devices and subsystems. National's leading-edge products include power management circuits, display drivers, audio and operational amplifiers, communication interface products and data conversion solutions. National's key analog markets include wireless handsets, displays and a variety of broad electronics markets, including medical, automotive, industrial, and test and measurement applications. Headquartered in Santa Clara, California, National reported sales of $1.91 billion for fiscal 2005, which ended May 29, 2005. Additional company and product information is available at www.national.com.

NOTE: National Semiconductor is a registered trademark of National Semiconductor Corporation. All other brands or product names are trademarks or registered trademarks of their respective holders.

    Media Contact                       Reader Information
     Megan Carter                       Design Support Group
     National Semiconductor             800-272-9959
     +1-408-721-6929                    
www.national.com
     
Email Contact

CONTACT: media, Megan Carter of National Semiconductor, +1-408-721-6929,
or Email Contact; or Reader Information, Design Support Group,
+1-800-272-9959, or www.national.com

Web site: http://www.national.com/pf/LM/LM94021.html//
http://www.national.com/pf/LM/LM94022.html//
http://www.national.com//




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