M. Caselli, I. Papistas, S. Cosemans, A. Mallik, P. Debacker, D. Verkest
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Charge Sharing and Charge Injection A/D Converters for Analog In-Memory Computing
This paper describes the design of two A/D converters, the Charge Sharing SAR and the Charge Injection SAR, in 22 nm FD SOI technology, for Analog-in-Memory computing in machine learning (ML) applications. The former architecture matches well SRAM-based Matrix-Vector Multipliers (MVM)s, whereas the latter is suitable for integration with SOT-MRAM-based arrays. Both ADCs show remarkable energy figures and area metrics, making the topologies suitable for integration at the periphery of MVM arrays.