Very Low Power/Voltage CMOS SRAM 256K X 16 bit 非常低功电压CMOS SRAM56 × 16 LM4985 Boomer ® audio Power Amplifier Series stereo 135mW Low Noise Headphone Amplifier with Selectable Capacitively Coupled or output Capacitor-less (OCL) output and Digitally Controlled (I2C) V; Package: MICRO SMD; No of Pins: 12