A 440μW, 109.8dB DR, 106.5dB SNDR Discrete-Time Zoom ADC with a 20kHz BW

Conference paper (2020)

Authors

E.N. Eland Electronic Instrumentation - EEMCS
S. Karmakar Electronic Instrumentation - EEMCS
B. Gonen Electronic Instrumentation - EEMCS
Robert van Veldhoven NXP Semiconductors
K.A.A. Makinwa Microelectronics
Department
Microelectronics
Copyright: © 2020 E.N. Eland, S. Karmakar, B. Gonen, R. van Veldhoven, K.A.A. Makinwa
DOI
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https://doi.org/10.1109/VLSICircuits18222.2020.9162856
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Published Date

2020

Language

English

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Department

Microelectronics

Abstract

This paper presents a discrete-time (DT) zoom ADC for audio applications. A 2b quantizer in combination with a low power “fuzz” suppression technique, results in a significant improvement in linearity and energy-efficiency over previous designs. The ADC occupies 0.27mm 2 in 0.16μm CMOS and consumes 440μW from a 1.8V supply. In a 20kHz BW, it achieves 109.8dB DR and 106.5dB SNDR, resulting in a state-of-the-art Schreier FoM of 186.4dB.