Product category:
Analogue and Mixed Signal ICs
News Release from: National Semiconductor | Subject: LM94021 and LM94022
Edited by the Electronicstalk Editorial
Team on 01 July 2005
Sensors adjust gain to boost thermal
management
The industry's first 1.5V analogue temperature sensors with user-selectable gains can increase thermal management performance in low-voltage systems.
National Semiconductor has released the industry's first 1.5V analogue 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 to +150C
This article was originally published on Electronicstalk on 5 Jan 2001 at 8.00am (UK)
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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".
The LM94021 and LM94022 are precision analogue-output CMOS temperature sensors that operate from a supply voltage between 1.5 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, -8.2, -10.9 or -13.6mV/C.
The LM94021 and LM94022 feature low quiescent currents of 9 and 5.4uA, respectively.
These sensors come in the extremely small SC70 package and are footprint-compatible with National's industry-standard LM20 temperature sensor.
The LM94021 and LM94022 are priced at US $0.40 each in 1000-unit quantities.
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