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Low-voltage CMOS log-companding techniques for audio applications

 

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Author: Serra Graells, Francesc
Rueda Rueda, Adoración
Huertas Díaz, José Luis
Department: Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Date: 2004
Published in: Analog Integrated Circuits and Signal Processing, 38 (2), 121-135.
Document type: Article
Abstract: This paper presents a collection of novel current-mode circuit techniques for the integration of very low-voltage (down to 1 V) low-power (few hundreds of μA) complete SoCs in CMOS technologies. The new design proposal is based on both, the Log Companding theory and the MOSFET operating in subthreshold. Several basic building blocks for audio amplification, AGC and arbitrary filtering are given. The feasibility of the proposed CMOS circuits is illustrated through experimental data for different design case studies in 1.2 and 0.35 μm VLSI technologies.
Cite: Serra Graells, F., Rueda Rueda, A. y Huertas Díaz, J.L. (2004). Low-voltage CMOS log-companding techniques for audio applications. Analog Integrated Circuits and Signal Processing, 38 (2), 121-135.
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URI: https://hdl.handle.net/11441/76162

DOI: 10.1023/B:ALOG.0000011163.29809.57

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