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BCT8327
High efficiency, Low noise Class T Audio Amplifier
GENERAL DESCRIPTION
BCT8327 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 BCT8327 noise floor is as low as to 53μV, with 94dB high signal-to-noise-ratio (SNR). The ultra-low distortion 0.02% and unique Digital Power Modulation technology brings high quality music enjoyment.
BCT8327 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.
BCT8327 supports the special speaker and receiver two-in-one application. In receiver mode, amplifier is in Class-AB mode, the output noise floor is as low as 11μV, powered by VCC.
BCT8327 has built-in over current protection, over-temperature protection and short circuit protection function, effectively protecting the chip from damage.
The BCT8327 uses small 0.4mm pitch 1.605mmx1.605mm WCSP-14L package.
APPLICATIONS
Cellular Phones
Portable Audio Devices
Mini Speakers
Tablets
FEATURES
Power amplifier overall efficiency 80%
Speaker and Receiver two-in-one application
Class AB RCV Mode：1V/V, Vn=11μV,
THD+N=0.15%
Class T SPK Mode： 8V/V, Vn=53μV,
THD+N=0.02%
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：-100dB@217Hz
Support 6ohm speaker
Excellent pop-click suppression
ESD protection：±6kV (HBM)
Small 0.4mm pitch 1.605mmx1.605mm WCSP-14L package
