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ARTÍCULO
TITULO

All-Standard-Cell-Based Analog-to-Digital Architectures Well-Suited for Internet of Things Applications

Ana Correia    
Vítor Grade Tavares    
Pedro Barquinha and João Goes    

Resumen

In this paper, the most suited analog-to-digital (A/D) converters (ADCs) for Internet of Things (IoT) applications are compared in terms of complexity, dynamic performance, and energy efficiency. Among them, an innovative hybrid topology, a digital?delta (?) modulator (?M) ADC employing noise shaping (NS), is proposed. To implement the active building blocks, several standard-cell-based synthesizable comparators and amplifiers are examined and compared in terms of their key performance parameters. The simulation results of a fully synthesizable Digital-?M with NS using passive and standard-cell-based circuitry show a peak of 72.5 dB in the signal-to-noise and distortion ratio (SNDR) for a 113 kHz input signal and 1 MHz bandwidth (BW). The estimated FoMWalden" role="presentation">FoMWaldenFoMWalden FoM Walden is close to 16.2 fJ/conv.-step.

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