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National Semiconductor’s Dual-Mode Operational Amplifier Combines High Performance and Power Savings for Critical Sensor Applications

Oct 11, 2004

October 11, 2004—National Semiconductor Corporation (NYSE:NSM) today launched the lowest supply current, dual power mode operational amplifier available on the market.  National’s LMV422 has a unique power-saving mode that allows customers to reduce power consumption while maintaining an active circuit.  This allows for faster turn-on times in smoke detectors and other sensor interface applications where reaction time is critical.

"National’s LMV422 is high-performance analog in action,” said Erroll Dietz, vice president of National’s Amplifier product group.  “National has developed leading-edge technology where it matters most to customers – in low-power embedded systems where active circuits can be easily set from a low-power mode to a high-power mode, conserving battery life while keeping the circuit active.”

Differentiating Features
National’s LMV422 is a dual, rail-to-rail operational amplifier.  With an external control pin, the LMV422 can be switched between a very low-power (2 microamps per channel) and low- bandwidth (27KHz) mode to a full-power (400 microamps per channel) wide-bandwidth (8MHz) mode.  These combinations reduce power consumption, maintain necessary charges on the coupling capacitors and shorten the time needed to stabilize the signal after switching from low-power to high-power mode.  Additionally, the input bias of the LMV422 is very low at 5pA, and has a supply voltage range of 2.7V to 5V and a common mode rejection ratio (CMRR) of 85dB. 

Pricing and Availability
National’s LMV422 is available now in 10-pin mini SOIC packaging and is priced at $1.20 in 1,000-unit quantities.  For more information on National’s LMV422 visit http://www.national.com/pf/LM/LMV422.html
.  For more information on National’s amplifier products, visit http://amplifiers.national.com.  A large selection of amplifiers is supported by National’s Amplifiers Made SimpleSM WEBENCH® online design tool.  To explore these solutions visit http://webench.national.com.  To learn more about designing with amplifiers, visit National’s library of online seminars at http://www.national.com/onlineseminar/#amps.  To view a high-resolution downloadable photo of these products, visit National's photo gallery at http://www.national.com/company/pressroom/gallery/oa.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 markets include wireless handsets, displays, PCs and laptops.  The company's analog products are also optimized for numerous applications in a variety of electronics markets, including medical, automotive, industrial, and test and measurement.  Headquartered in Santa Clara, California, National reported sales of $1.98 billion for fiscal 2004, which ended May 30, 2004.  Additional company and product information is available at www.national.com