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Abstract
Collections of BASIC subroutines are developed to perform non-general circuit analyses. These subroutines are used to evaluate the manufacturability of a functionally trimmed thick film hybrid circuit. Nodal, sensitivity, and tolerance analyses are used to evaluate the effectiveness of the functional trim algorithm, and an optimization procedure to alter the nominal circuit parameter values for adequate margins.
The computer programs are not user-interactive, and the user has to write a separate program to incorporate the various subroutines. The programs are written for use on the HP9835A desktop computer. The component element types discussed are limited to resistors, capacitors, and voltage controlled current sources.
Nodal analysis is performed by LU factorization techniques, and sensitivity analysis by the adjoint network approach. Circuit frequency response optimization is presented using the Fletcher Powell minimization procedure and quadratic polynomial fitting. A Monte Carlo tolerance analysis routine is developed.
