Please use this identifier to cite or link to this item: https://doi.org/10.1109/SOCDC.2008.4815561
Title: A sigma-delta class D audio power amplifier in 0.35μm CMOS technology
Authors: Junle, P. 
Libin, Y. 
Yong, L. 
Keywords: Σ modulation
1.5bit quantization
Feedforward
Issue Date: 2008
Source: Junle, P.,Libin, Y.,Yong, L. (2008). A sigma-delta class D audio power amplifier in 0.35μm CMOS technology. 2008 International SoC Design Conference, ISOCC 2008 1 : I5-I8. ScholarBank@NUS Repository. https://doi.org/10.1109/SOCDC.2008.4815561
Abstract: This paper presents a single chip class D audio power amplifier realized in a 0.35μm CMOS technology. This chip consists of a high-linear single-loop feed-forward Sigma-Delta modulator with three level quantizer and a full H-bridge output stage. The three-level quantizer effectively reduces the switching activity of the output stage, especially when the input signal amplitude is low, hence improves the power efficiency. Direct feedback from H-bridge output improves the linearity of the amplifier. With a 3.3-V supply voltage and 4-Ohm load, the amplifier can deliver maximum 1-W output power with THD less than 0.8% at 8kHz and reaches a maximum power efficiency more than 80%. ©2008 IEEE.
Source Title: 2008 International SoC Design Conference, ISOCC 2008
URI: http://scholarbank.nus.edu.sg/handle/10635/69065
ISBN: 9781424425990
DOI: 10.1109/SOCDC.2008.4815561
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

4
checked on Dec 13, 2017

Page view(s)

28
checked on Dec 9, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.