集成巴黎人手机版网址芯片资料和参数

芯片型号:A7015

功能特点

■ The A7015 is a cost-effective 2.5W mono filter-free class-D audio power amplifier, designed with Apexone proprietary EFS (Enhance Feedback Structure) technology and architecture. The device can drive speakers as low as 4O. Apexone EFS technology has the advantage over traditional PWM class D audio power amplifier and increases the performance dramatically for audio solutions. It reduces THD and EMI effectively and offers low distortion across both the wide audio output power range and the full audio frequency domain. The device utilizes a fully differential architecture and a full-bridged output. The A7015 features high 72dB PSRR, as low as 0.02% THD+N, and 86dB or higher SNR. Short circuit and thermal-overload-protection prevents the devices from being damaged during over current conditions. Integrated internal mute control function suppresses pop/click sound. The high efficiency of the A7015 eliminates the need of external heat sinks and extends battery life.

参数指标

■ 2.5W into 4O load (THD+N=10%, Vcc= 5V)

■ 0.015% THD+N

■ High efficiency:91% at 5V, 1W with 8O load;878% at 3.6V, 400mW with 8O load

■ Low quiescent current of 2.75mA

■ Low shutdown current of 0.2uA

■ Adjustable gain by external resistor.

■ 72dB PSRR at 217Hz

■ Internal mute function to reduce pop noise

■ 2.5V to 5.5V single supply operation

■ Thermal and short-circuit protection

■ Optimized PWM output stage eliminating LC output filter

■ Proprietary technology to reduce EMI

■ ESD protection on all pins

应用领域

■ Wireless handsets

■ Portable audio devices such as MP3, PMP, PDAs

■ Cordless phones

■ PHS phones

■ PNDs, GPSs

■ Digital Photo Frames