Statistical Analysis and Optimization of a Bandgap Reference for VLSI

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Statistical Analysis and Optimization of a Bandgap Reference for VLSI Applications

lddic

Abstract.
Voltage and current references are widely needed for all kinds of integrated circuits,
as most applications require temperature-independent references with a high reproducibility
in mass production. For this purpose normally bandgap references are used. Though it is a
common task to set up an application specific bandgap circuit, handling of the statistical design
aspects is often not a standardized step in the design flow. This article describes some of the
steps that were taken during the design of a bandgap reference for a given VLSI application.
All statistical simulations were carried out with the simulation tool GAME (General Analysis
of Mismatch Effects) which is used at Infineon/D¨usseldorf since 1999.
Keywords: Bandgap, Statistical Analysis, Mismatch, Optimization, Simulation

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