National Semiconductor introduces five precision operational amplifiers (op amps) for portable test and measurement, and 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 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 analogue-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.

Pricing and availability

All five new products are available now with prices ranging from $1.05 to $2.45 in 1,000-unit quantities. For more information and easy-to-order samples, visit www.national.com/pf/LM/LMP7707.html, www.national.com/pf/LM/LMP7708.html, www.national.com/pf/LM/LMP7709.html, www.national.com/pf/LM/LMP7717.html and www.national.com/pf/LM/LMP7718.html.

National's Amplifiers Made SimpleSM WEBENCH online design tool supports a large selection of amplifiers. To explore these solutions, visit webench.national.com. To learn more about designing with amplifiers, visit the library at www.national.com/onlineseminar/#amps.