National Semiconductor Rolls Out Low-Offset, Precision Amplifiers

National Semiconductor Corporation (NYSE: NSM) introduced five precision operational amplifiers (op amps) for portable test and measurement, industrial and medical systems that require signal-conditioning and sensor interface accuracy at gains of 6 V/V or higher.

The LMP7707 single, LMP7708 dual, LMP7709 quad, LMP7717 single and LMP7718 dual are the latest additions to the company’s PowerWise(R) energy-efficient product family. The LMP7717 delivers 88 MHz gain bandwidth while consuming only 1.15 mA of quiescent current, while the LMP7707 provides 14 MHz gain bandwidth at 0.715 mA of quiescent current. These high bandwidth-to-power ratios enable unparalleled power efficiency for extending battery life in portable devices. Additionally, the precision of the LMP7717 and LMP7718 supports data acquisition systems of 16-bits or greater. In these high-resolution data acquisition systems, the designer commonly scales the output of a sensor to the full-scale input of an analog-to-digital converter (ADC) to ensure optimum sensitivity.

The new LMP precision op amps are built on National’s proprietary VIP50 BiCMOS process technology. VIP50 allows National to design higher-performance precision op amps, along with the most power-efficient, low-voltage amplifiers on the market.

Key Features — LMP7717/18 Precision Op Amps
The LMP7717 single and LMP7718 dual are low-noise, CMOS input operational amplifiers that offer a low-input voltage noise density of 5.8 nV/sqrt Hz. These devices are stable at a gain of 10 and higher. The LMP7717 and LMP7718 have a supply voltage range of 1.8V to 5.5V and can operate from a single supply or dual supplies. By providing an input bias current of only 100 femtoamps (fA), these precision amplifiers provide optimal performance in low-voltage and low-noise systems. Their precision DC specifications include an input offset voltage of less than 180 uV to improve overall system accuracy. The LMP7717 is offered in 5-pin SOT23 or 8-pin SOIC packages, while the LMP7718 is offered in 8-pin SOIC or 8-pin MSOP packages.

Key Features — LMP7707/08/09 12V Precision Op Amps
The LMP7707 single, LMP7708 dual and LMP7709 quad are low offset voltage, rail-to-rail input and output (RRIO) precision amplifiers. They provide an operating voltage range up to 12V for single or dual supply applications and are stable at a gain of 6 V/V and higher. These high-speed amplifiers feature CMOS input and offer the key specifications required for superior performance and signal conditioning accuracy, including low-input noise density of 9 nV/sqrt Hz, guaranteed low offset voltage of less than 200 uV and a guaranteed low input bias current of less than 1 picoamp (pA). The LMP7707/08/09 devices exceed 100 dB for common-mode rejection ratio (CMRR), power supply rejection ratio (PSRR) as well as large signal voltage gain (Avol). The LMP7707, LMP7708 and LMP7709 are offered in 5-pin SOT23, 8-pin MSOP and 14-pin TSSOP packages, respectively.

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 ICs 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(TM) and micro SMD packaging technologies.

Pricing and Availability
All five new products are available now with prices ranging from $1.05 to $2.45 in 1,000-unit quantities.

About National’s PowerWise Brand
National’s PowerWise brand reflects the company’s energy-efficient product portfolio. It signifies products with outstanding performance-to-power at the component level, as well as products that provide an outstanding, energy-efficient solution when coupled with other National parts. National’s PowerWise family of products features energy-efficient power management, operational amplifiers, interface and data conversion products.

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, communications infrastructure, medical, automotive, industrial, and test and measurement applications. Headquartered in Santa Clara, Calif., National reported sales of $1.93 billion for fiscal 2007, which ended May 27, 2007.

PowerWise, WEBENCH and LMP are registered trademarks and Amplifiers Made Simple and Silicon Dust are trademarks of National Semiconductor Corporation.