“Industry’s lowest” noise precision amplifier family
( 01 Jan 2008 )
Two precision operational amplifiers (op amps) offered by National Semiconductor are said to offer the industry’s lowest input voltage noise and highest accuracy for products operating at low frequencies and low supply voltage. Target applications include industrial and scientific weight scales, pressure sensors and other low ohmic sensor systems.
National’s LMP7731 single and LMP7732 dual precision op amps are the latest additions to the company’s LMP precision amplifier family and provide low input voltage noise of 2.9nV/sqrt Hz with a 1/f noise corner of only 3Hz. They also feature 0 to 10Hz peak-to-peak noise voltage of 78nVpp. This ensures highly accurate signal conditioning, while minimizing distortion in low-frequency (near DC) sensor applications. The new LMP precision op amps are built on the company’s proprietary VIP50 BiCMOS process technology. The VIP50 process allows National to design higher-performance precision op amps, along with the most power-efficient, low-voltage amplifiers on the market.
