BCT8937A Class T Audio Amplifier

BCT8937A
Class T Audio Amplifier
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GENERAL DESCRIPTION
BCT8937A 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 BCT8937A 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.

BCT8937A 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.

BCT8937A has built-in over current protection, over-temperature protection and short circuit protection function, effectively protecting the chip from damage.

The BCT8937A uses small FCQFN1.6x1.6-16L package.

APPLICATIONS
Cellular Phones

Portable Audio Devices

Mini Speakers

Tablets

FEATURES
Power amplifier overall efficiency 80%

Low noise：53μV

Ultra-low distortion：0.08%

Digital Power Modulation (DPM) technology

Selectable speaker-guard power level：0.6W， 0.8W，1.0W，1.2W

Within voltage range(3.3V-4.35V), output power is maintained constant

One wire pulse control

High PSRR：-68dB（217Hz）

Support 6ohm speaker

Excellent pop-click suppression

ESD protection：±6kV (HBM)

Small FCQFN1.6x1.6-16L package