100W 0.004% THD+N、113dB DR的音频d类放大器数字输入控制器

2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers Pub Date : 2006-09-18 DOI:10.1109/ISSCC.2006.1696185

T. Ido, S. Ishizuka, Lars Risbo, Fumitaka Aoyagi, Toshi Hamasaki

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引用次数: 21

摘要

介绍了一种用于音频d类放大器的数字输入控制器。控制器采用特殊配置的集成DAC和功率级反馈回路，抑制功率级开关产生的失真分量，具有数字输入能力。采用控制器和现有功率级的d类放大器系统在4Omega负载中实现113dB DR, 0.0018% THD+N, 10W输出功率，0.004% THD+N, 100W输出功率

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A Digital Input Controller for Audio Class-D Amplifiers with 100W 0.004% THD+N and 113dB DR

A digital input controller for audio class-D amplifiers is presented. The controller utilizes specially configured integrated DAC and power stage feedback loop to suppress distortion components coming from power-stage switching with digital input capability. The class-D amplifier system with the controller and an existing power stage achieves 113dB DR, 0.0018% THD+N with 10W output power, and 0.004% THD+N with 100W output power into 4Omega load

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2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers

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