High efficiency and low distortion switching power amplifier for hearing aids
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A high efficiency and low distortion switching power amplifier is proposed. This circuit is designed for micropower low-voltage hearing aids. The experimental results show that the proposed circuit has 0.27% total harmonic distortion and 90% power efficiency while the d.c. output bias current (for RL=600 Ω) is 19 μA at 1.5 V supply voltage.
[1] R. Jacob Baker,et al. CMOS Circuit Design, Layout, and Simulation , 1997 .
[2] R. M. Bass,et al. Analysis of the class AD audio amplifier including hysteresis effects , 2003 .
[3] Gyu-Hyeong Cho,et al. Class D audio power amplifier with fine hysteresis control , 2002 .
[4] Bah-Hwee Gwee,et al. An investigation into the parameters affecting total harmonic distortion in low-voltage low-power Class-D amplifiers , 2003 .