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The LMP7721 precision amplifier has an input-bias current of 20fA over the extended temperature range of -40 to +125°C. The device yields maximum system sensitivity and accuracy from photodiode and high-impedance sensors and is well-suited for improving sensitivity and accuracy in battery-operated portable applications, as well as for electrochemical sensor-interface circuitry. As a member of National Semiconductor's PowerWise family of energy-efficient products, the amplifier provides a gain bandwidth of 17MHz while consuming only 1.3mA of current. It also features low a input-voltage noise of 6.5nV/Hz, a low DC-offset voltage of ±150µV maximum at +25°C and a low offset-voltage temperature coefficient of 1.5µV/C to improve system sensitivity and accuracy. It has a supply-voltage range of 1.8 to 5.5V and is offered in an 8-pin SOIC package with a special isolating pin-out.