A Low Power Continuous-Time Zoom ADC for Audio Applications

Conference paper (2019)

Authors

B. Gonen Electronic Instrumentation - EEMCS
Robert Van Veldhoven NXP Semiconductors
K.A.A. Makinwa Microelectronics
Research Group
Electronic Instrumentation (EEMCS) (TU Delft)
Copyright: © 2019 B. Gonen, Shoubhik Karmakar, Robert Van Veldhoven, K.A.A. Makinwa
DOI: https://doi.org/10.23919/VLSIC.2019.8778021
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Published Date

2019

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Instrumentation

Abstract

This paper presents a continuous-time (CT) zoom ADC for use in audio applications. Compared to previous zoom ADCs, its input impedance is mainly resistive, making it much easier to drive while still maintaining high energy efficiency. The prototype is fabricated in a 0.16 ×m CMOS process, occupies 0.27 m m2 and achieves 108.5 dB DR, 108.1 dB SNR, 106.4 dB SNDR in a 20 kHz BW, while consuming 618 ×W. This results in a state-of-the-art Schreier FoM of 183.6 dB.

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