An Area-Aware Figure of Merit for Improved State-of-the-Art Comparison of Analog-to-Digital Converters
Keywords:
Figure-of-Merit, Analog-to-Digital Converters, Area, Resolution, Bandwidth, Power dissipation.Abstract
This paper introduces a new Figure-of-Merit (FoM) for Analog-to-Digital Converters (ADCs) that integrates silicon area alongside the traditional metrics of resolution, bandwidth, and power dissipation. As technology scaling and system-on-chip integration make area efficiency a critical design constraint, the established Walden and Schreier FoM's provide an incomplete comparison of state-of-the-art performance. The proposed Area-Aware FoM (FoM$_{\text{A}}$) enables a more integral and equitable benchmarking by directly quantifying the trade-off between dynamic performance and physical implementation cost. The validity and utility of the FoM$_{\text{A}}$ are demonstrated through a re-evaluation of over 40 published ADCs, revealing significant shifts in architectural ranking and offering designers a more relevant metric for advanced technology nodes.
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