← 返回 JSSC 论文列表JSSC 2012第8期RF & Wireless0.18μm CMOS
A 60 mW Class-G Stereo Headphone Driver for Portable Battery-Powered Devices She
一款用于便携设备的60mW Class-G立体声耳机驱动器，具有高效率和抗干扰能力。
111 dB动态范围，120 dB PSRR，2.3 mm²面积
Class-G耳机驱动器便携设备高效率抗干扰
▸采用高阶前馈环路拓扑提高抗电池干扰能力
▸Class-G放大器与Class-AB/B驱动级结合提升小信号效率
▸优化设计延长音乐播放时间
Abstract
A 60 mW 1.15 mA/channel Class-G stereo headphone
driver primarily designed for demanding applications in mobile
phones and other portable communication devices is described.
The architecture of the driver has been chosen to overcome the var-
ious design challenges for audio ampli fiers in a wireless environ-
ment. A high-order feed-forward loop topology provides high im-
munity to battery disturbance with extended correction range. In
addition, a Class-G ampli fier with a Class-AB/B driving stage