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National Semiconductor's New 1V Op Amp Breaks the Low-Voltage Performance Barrier

Nov 28, 2006

November 28, 2006 – National Semiconductor Corporation (NYSE:NSM) today expanded its high-performance low voltage and low-power portfolio with the industry’s highest-bandwidth, 1V, rail-to-rail input and output (RRIO) CMOS operational amplifier.  The LMV951’s combination of bandwidth and low power make it well-suited for cell phones, handheld devices, portable medical equipment and low-power instrumentation.

National’s LMV951 is the only 1V operational amplifier capable of delivering 2.7 MHz unity-gain bandwidth and maintaining its stability when driving a 500 pF capacitive load.  It features low voltage noise of 25 nV/sqrtHz across a temperature range from -40 degrees C to 125 degrees C.  These features, coupled with a common-mode rejection ratio (CMRR) of 80 dB and a power supply rejection ratio (PSRR) of 80 dB, make the op amp suitable for applications requiring higher gain and performance. The high CMRR also works well for non-inverting configurations.

The LMV951 operates from a supply voltage of 1V to 3V with RRIO.  The op amp’s rail-to-rail output maintains its dynamic range at low voltages.  The LMV951’s output is buffered, making it independent of resistive loads which enable better gain linearity and lower distortion. Its rail-to-rail input also allows it to be used in low-voltage applications requiring a high signal-to-noise ratio (SNR).   For power-sensitive applications, the amp has a separate shutdown pin that reduces the supply current to 5 uA.  

Built on National’s proprietary VIP50 BiCMOS process technology, LMV951 joins a family of 15 precision and low-voltage, low-power amplifiers introduced in the past year to dramatically improve accuracy, power consumption and voltage noise.

About National’s Amplifier Portfolio
Specializing in high-performance amplifiers and comparators, National Semiconductor offers a complete portfolio of op amps addressing the high-speed, precision, low-voltage and low-power markets with products ranging from building-block chips to application-specific standard products (ASSPs). The company has a long history of setting industry standards in amplifiers and continues this trend with product releases on National’s advanced VIP10 bipolar and VIP50 BiCMOS processes. National also leads the industry in packaging technology with its revolutionary Silicon Dust™ and micro SMD packaging technologies.  For more information on National’s amplifier products, visit amplifiers.national.com.

Pricing and Availability
The LMV951 is available now for 78 cents in 1,000-unit quantities. For more information and easy-to-order samples, visit http://www.national.com/pf/LM/LMV951.html
. National’s Amplifiers Made SimpleSM WEBENCH® online design tool supports a large selection of amplifiers.  To explore these solutions, visit http://webench.national.com.  To learn more about designing with amplifiers, visit our library of online seminars.   

Note to editors: To view a high-resolution downloadable photo of this product, visit National's photo gallery

About National Semiconductor
National Semiconductor, the industry's premier analog company, creates high-value analog devices and subsystems.  National's leading-edge products include power management circuits, display drivers, audio and operational amplifiers, 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, Calif., National reported sales of $2.16 billion for fiscal 2006, which ended May 28, 2006.  Additional company and product information is available at www.national.com