意法半导体的耳机与低功耗放大器产品组合为您提供完美适配应用的设计灵活性与功能特性：
- AB类、G类和无滤波D类架构，实现了最佳音频性能和功效
- 集成式特性，精简了物料单，例如无电容和无滤波放大
- 提供多种封装选项，包括适于板空间非常宝贵的应用的超小型封装
A22H165: available either I2C controlled or in u-less config
The A22H165 is a class-G stereo headphone driver dedicated to high audio performance, high power efficiency and space-constrained applications. When powered by a battery, the buck converter generates the appropriate voltage to the amplifier depending on the amplitude of the audio signal to supply the headsets. It achieves a total 2.1 mA current consumption at 100 μW output power (10 dB crest factor). Stand-by current consumption is as low as 0.6μA thus guaranteeing and extended battery life. The A22H165 comes into flip chip package measuring 1.65x1.65x0.6mm, 16 bumps, 0.4mm pitch. Combining high efficiency, high audio quality and small size into a single device, the A22H165 is the perfect match for portable applications such as smartphones, tablets and media players.