一个8Ω， 1.75W, 95%效率，0.004% THD+N d类放大器，前馈ADC和反馈滤波器

2013 IEEE Asian Solid-State Circuits Conference (A-SSCC) Pub Date : 2013-12-23 DOI:10.1109/ASSCC.2013.6691059

Xicheng Jiang, Jungwoo Song, D. Cheung, Minsheng Wang, S. Arunachalam

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引用次数: 5

摘要

一种集成的超低EMI d类放大器，具有前馈ADC和反馈滤波器，采用180nm CMOS和线键封装。讨论了电路和架构技术，使1.75W变为8欧姆扬声器，105 dB动态范围，95%效率，0.004% THD+N以及超出EN55022 B类标准的15.4 dB裕度。

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An 8Ω, 1.75W, 95% efficiency, 0.004% THD+N Class-D amplifier with a feed-forward ADC and feedback filters

An integrated ultralow EMI Class-D amplifier with a feed-forward ADC and feedback filters is demonstrated in a 180 nm CMOS and wire-bonded package. Circuit and architecture techniques, which enables 1.75W into an 8 Ohm speaker, 105 dB dynamic range, 95% efficiency, 0.004% THD+N, and 15.4 dB margin beyond the EN55022 Class B standard, are discussed.

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2013 IEEE Asian Solid-State Circuits Conference (A-SSCC)

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