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Precision op amp targets satellite applications

Posted: 02 Apr 2007 ?? ?Print Version ?Bookmark and Share

Keywords:precision op amps? dual op amps? satellite applications?

LMP2012WGLQMLV dual op amp from National

National Semiconductor Corp. has announced the first dual amplifier in its new family of precision op amps specifically QMLV-qualified for space-level applications. The LMP2012WGLQMLV dual op amp is suitable for satellite applications such as attitude and orbital controls, sun and inertial sensors, gyroscopes, pressure sensors, static earth sensing, bolometers and earth observation systems.

The new device is a rail-to-rail output op amp that uses patented techniques to measure and continually correct the input offset error voltage, while eliminating the unwanted 1/f voltage and current noise present in traditional amplifiers. This results in a high-performance amplifier that offers high levels of accuracy and stability over time and temperature.

The device is radiation tested to 50K rad (Si) and displays excellent CMRR and power supply rejection ratio (PSRR) ratings of 90dB over the full space temperature range. Operating from a supply voltage of 2.7-5V, the LMP2012WGLQMLV provides high performance in transducer amplifiers, high-gain configurations, ADC buffer amplifiers and DAC current-to-voltage conversion applications.

The LMP2012WGLQMLV offers low input offset voltage of 60?V over the extended temperature range of -55C to 125C, 4V/&mciro;s of slew rate and a wide gain-bandwidth of 3MHz for accurate signal amplification. Other key specifications include input-referred voltage noise of 35nV/sqrt Hz and open-loop gain greater than 100dB.

The new dual op amp is available in a 10-pin ceramic SOIC package. It is space-grade qualified to MIL-STD-38535 QML level V and can be purchased as the standard military drawing (SMD) 5962L0620601VZA. Pricing information cab be obtained from local sales offices and distributors.

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