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产品描述

BCT89317 is specifically designed to enhance smart mobile phone sound quality, which is an innovative high efficiency, low noise, ultra-low distortion, constant large volume, Class T audio amplifier, Using our unique Digital Power Modulation(DPM) audio algorithm, effectively eliminate audio noise, increase signal Dynamic range which will greatly improve sound quality and volume. With an advance TOP power technology, efficiency reach 93%, and power amplifier’s overall efficiency is up to 80%, greatly saves the mobile phone power consumption and prolong the mobile phone usage time. The BCT89317 noise floor is as low as to 53μV, with 97dB high signal-to-noise-ratio(SNR). The ultra-low distortion 0.08% and unique Digital Power Modulation technology brings high quality music enjoyment.

BCT89317 has 0.6W, 0.8W, 1.0W and 1.2W four selectable speaker-protection output power levels, which is suitable for different rated power speakers. With Digital Power Modulation audio Algorithms, the music is pure nature and melodious. Within lithium battery voltage range (3.3V–4.35V), output power is constant, preventing the voice becomes smaller and smaller during usage of cell phone.

BCT89317 supports the special speaker and receiver two-in-one application. In receiver mode, the output noise floor is as low as 22uV, amplifier is in class D mode, powered by VBAT.

BCT89317 has built-in over current protection, over-temperature protection and short circuit protection function, effectively protecting the chip from damage.

The BCT89317 uses small 0.4mm pitch 1.58mmx1.63mm WCSP-14L package.