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公开(公告)号:US20220163590A1
公开(公告)日:2022-05-26
申请号:US17532970
申请日:2021-11-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
IPC: G01R31/367 , G01R31/3842 , G01R31/389
Abstract: A circuit for determining device under test (DUT) model parameters is described. The circuit includes a parameter estimator circuit configured to: obtain initial values for DUT model parameters based on sense signal samples; execute a parameter convergence model having a regularization parameter and a cost function that accounts for error residuals; and obtain final values for the DUT model parameters by adjusting the regularization parameter in iterations of the parameter convergence model as a function of cost function improvement until the parameter convergence model converges to within a target tolerance.