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

Eland, E.N.; Karmakar, S.; Gonen, B.; Van Veldhoven, Robert; Makinwa, K.A.A.

doi:10.1109/VLSICircuits18222.2020.9162856

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 -

S. Karmakar Electronic Instrumentation -

B. Gonen Electronic Instrumentation -

Robert Van Veldhoven NXP Semiconductors

K.A.A. Makinwa Microelectronics

Department

Microelectronics

DOI: 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.

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