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该论文提出了一种立体声Class-G耳机驱动器，通过差分转单端模块和创新的架构设计，在低功耗下实现了高动态范围和低静态电流，解决了移动设备中耳机驱动器的功耗与性能平衡问题。
A differential to singleended block (D2S) converts the output voltage of the Gm-C loop filter into an appropriate single-ended signal at the input of the class-AB and class-B amplifiers. The architecture suppresses errors due to Class-G supply, limits loop bandwidth and enhances loop gain to reduce output stage requirements, and achieves low quiescent current and die area. The measured A-weighted noise is 5.4μVrms at room temperature which results in 108dB DR. 1 2 Mobile and portable devices like smartphones and tablets require headphone drivers that consume the lowest possible levels of quiescent current while operating directly from available battery voltages. Key headphone performance parameters for these devices are high dynamic range, high output power and low
Jianlong Chen1, Sasi Kumar Arunachalam1, Todd L. Brooks1,
Iuri Mehr1, Felix Cheung1, Hariprasath Venkatram2 Broadcom, Irvine, CA, Oregon State University, Corvallis, OR is needed to have a loop-filter bandwidth around 400kHz