半导体学报2006，Vol.27Issue(z1)：29-31,3.
一款用于驱动耳机的低噪声低功耗音频功率放大器的设计
Design of a Low Noise, Low Power Audio Power Amplifier for Driving Headphones
魏本富 1袁国顺1
作者信息
- 1. 中国科学院微电子研究所,北京,100029
- 折叠
摘要
Abstract
This paper describes the design and implementation of a low noise, low power,programmable-gain audio power amplifier used as a headphone driver. It obtains a 0.1% THD + N with a 5V power-supply, a 1kHz frequency audio signal,and a 120mW continuous average output power into a 16Ω load. In addition, the gain can be set from + 12 to - 34.5dB in 32 discrete steps of 1.5dB. The amplifier is used as the core of a programmable gain audio power amplifier for driving headphones. The audio power architecture, the main module circuits of the amplifier design, the test results, and the chip layout are included. Experimental results using a CSMC 0. 6μm double poly double metal CMOS process show that the required performance can be obtained.关键词
音频功率放大器/低噪声/低功耗Key words
audio power amplifier/low noise/low power分类
信息技术与安全科学引用本文复制引用
魏本富,袁国顺..一款用于驱动耳机的低噪声低功耗音频功率放大器的设计[J].半导体学报,2006,27(z1):29-31,3.
