GENERAL DESCRIPTIONThe A7013 is a cost-effective 2.5W mono filter-freeclass-D audio power amplifier, designed with Apexoneproprietary EFSTM (Enhanced Feedback Structure)technology and architecture. The device can drivespeakers as low as 4Ω. Apexone EFSTM technology has the advantage overtraditional PWM class D audio power amplifier andincreases the performance  dramatically for audiosolutions. It reduces THD and EMI effectively and offerslow distortion across both the wide audio output powerrange and the full audio frequency domain. The deviceutilizes a fully differential architecture and a full-bridgedoutput.The A7013 features high PSRR of 81dB, low THD+N of0.02%, and higher than 88dB SNR. Short circuit and thermaloverload protection prevents the devices from being damagedduring over current conditions. Integrated internal mutecontrol function suppresses pop/click sound. The highefficiency of the A7013 eliminates the need of external heatsinks and extends battery life. KEY FEATURESz  2.5W into 4Ω load (THD+N=10%, Vcc= 5V)z  0.022% THD+N   z  High efficiency91% at 5V, 1W with 8Ω load88% at 3.6V, 400mW with 8Ω loadz  Low quiescent current of 2.3mAz  Low shutdown current of 0.04uAz  Adjustable gain by external resistor.z  81dB PSRR at 217Hzz  Internal mute function to reduce pop noisez  2.5V to 5.5V single supply operationz  Thermal and short-circuit protectionz  Optimized PWM output stage eliminating LCoutput filterz  Proprietary technology to reduce EMI APPLICATIONSz  Mobile phonez  MP4z  PDAz  Portable DVDz  Notebook ORDERING INFORMATION PART No  PACKAGE Package Qty TEMP RANGEA7013 M WLCSP 3000pcs/Reel -40°C to 85°CA7013 G DFN  3000pcs/Reel -40°C to 85°C