A Speaker Driver for Single Phase Supply Class G & I

摘要：

The paper describes the design and implementation of a speaker driver applied to Class G/Class I with single phase power supply. Gain expanding and compressing technology are employed in signal processing circuit to optimize power dissipation. Experimental results using 0.18μm N-well CMOS show that it can obtain less than 0.006％ THD at low power range and less than 0.4％ at medium power range with a 1 KHz sine wave signal. It can get maximum output power of 360mW at a load of 8Ω. The power efficiency is about twice as that of traditional class AB driver at the power range of 80mW and more than 18％ improvement at higher power range.

作者: Yong Feng Zhenfei Peng Shanshan Yang Zhiliang Hong Yang Liu

作者单位: State Key Laboratory of ASIC and System, Fudan University, Shanghai 201203, China Shanghai Design Center, Analog Devices, 200021, China

会议类型: 国际会议

会议名称: 2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology(第十届固态和集成电路技术国际会议 ICSICT-2010)

会议地点: 上海

会议语种:英文

页码: 354-356

在线出版日期: 2010-11-01（万方平台首次上网日期，不代表论文的发表时间）