A Dynamic Zoom ADC with 109-dB DR for Audio Applications

Journal article (2017)

Authors

B. Gonen Electronic Instrumentation - EEMCS
F. Sebastiano (OLD)Applied Quantum Architectures
Rui Quan NXP Semiconductors
Robert van Veldhoven NXP Semiconductors
K.A.A. Makinwa Microelectronics
Research Group
Electronic Instrumentation (EEMCS) (TU Delft)
Copyright: © 2017 B. Gonen, F. Sebastiano, Rui Quan, Robert van Veldhoven, K.A.A. Makinwa
DOI: https://doi.org/10.1109/JSSC.2017.2669022
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Published Date

2017

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Instrumentation

Abstract

This paper presents the first dynamic zoom ADC. Intended for audio applications, it achieves 109-dB DR, 106-dB signal-to-noise ratio, and 103-dB SNDR in a 20-kHz bandwidth, while dissipating only 1.12 mW. This translates into the state-of-the-art energy efficiency as expressed by a Schreier FoM of 181.5 dB. It also achieves the state-of-the-art area efficiency, occupying only 0.16 mm2 in the 0.16- μm CMOS. These advances are enabled by the use of concurrent fine and coarse conversions, dynamic error-correction techniques, and a dynamically biased inverter-based operational transconductance amplifier.