Patent ID: 7302357
Filing Date: 2007-11-27
Classification: H01L

Abstract:
1. An apparatus for determining a compensation signal, comprising: a provider for providing first and second partial compensation signals, wherein the first and second partial compensation signals have a different mechanical stress dependence; a combiner for combining the first and second partial compensation signals into an intermediate compensation signal; a temperature detector for detecting a temperature of a semiconductor circuit substrate; a provider for providing a deviation signal, wherein the deviation signal comprises information about the deviation of a real ratio of the first and second partial compensation signals from a set ratio of the same at a reference temperature; a preprocessor, which is implemented to form a corrected deviation signal considering the detected temperature from the deviation signal, under consideration of the detected temperature; and an evaluator, which is implemented to provide the compensation signal based on the intermediate compensation signal and the corrected deviation signal, which is a measure for the mechanical stress acting on the semiconductor circuit substrate.