A switching power amplifier with feedback for improving total harmonic distortion

作者：Kao, Chia Hsiung; Tsai, Ping Yu; Lin, Wen Pin^*; Chuang, Yao Jen

来源：Analog Integrated Circuits and Signal Processing, 2008, 55(3): 205-212.

DOI：10.1007/s10470-007-9047-7

• efficiency
• distortion
• hearing aids

A high efficiency and low distortion and switching power amplifier is proposed. We use feedback to reduce the total harmonic distortion (THD) and the DC output bias current. The experimental results show that the proposed circuit has 0.24% total harmonic distortion and 91% power efficiency while the DC output bias current is 12 mu A at 1.5 V supply voltage.

• 出版日期2008-6
• 单位中山大学