HIGH-PRECISION MONOLITHIC SUPER-BETA OPERATIONAL AMPLIFIER. Article

Maidique, MA. (1972). HIGH-PRECISION MONOLITHIC SUPER-BETA OPERATIONAL AMPLIFIER. . SC-7(6), 480-487. 10.1109/jssc.1972.1050322

cited authors

  • Maidique, MA

abstract

  • A single-chip (67x90 mil) integrated-circuit operational amplifier using thin-film resistors and super-gain transistors has been designed to achieve dc follower accuracies of 0. 001 percent with 100-k OMEGA source resistance. The circuit achieves gains of 140 db using thermally balanced layout designs for both input and output stages, nulled drifts of 0. 3 mu v/ degree C, and offset currents well under 1 nanoamp. All other dc specifications including power-supply variation error (PSRR), common-mode gain error (CMRR), etc. , are in the 1-10 ppm error range. A procedure is given by which long-term drifts of less than 10 mu v/month can be assured.

publication date

  • January 1, 1972

Digital Object Identifier (DOI)

start page

  • 480

end page

  • 487

volume

  • SC-7

issue

  • 6