High efficiency, Low noise, Constant large volume, Multi-level AGC Eighth generation Class K Audio Amplifier

AW8738 is specifically designed to eliminate smart mobile phone music noise, to enhance overall sound quality, which is a new high efficiency, low noise, ultra-low distortion, constant large volume, eighth generation class K audio amplifiers. AW8738 integrated Awinic proprietary multi-level AGC audio algorithm, effectively  eliminate  music  noise, improve  sound quality and volume. Using a new generation 93% efficiency K-Chargepump, power amplifier‟s overall efficiency reaches 83%, greatly prolong the mobile phone usage time. AW8738 noise floor is as low as to 40uV, with 99.6dB high signal-to-noise-ratio(SNR). The ultra-low distortion 0.008% and unique multi-level AGC technology brings high quality music enjoyment. AW8738 has 0.6W, 0.8W, 1W and 1.2W four selectable speaker-guard output power levels, which is suitable for different rated power speakers, greatly improve the volume, effectively protect speakers. With multi-level AGC audio algorithms, the music is pure natural and melodious. AW8738 is compatible with AW8736, AW8737, output power cannot drop along with lithium battery voltage lower down. Within lithium battery voltage range(3.3V-4.35V), output power is constant. The AW8738 uses Awinic proprietary TDD-Noise suppression  technology  and  EMI  suppression technology, effectively restrain TDD-Noise and EMI interference.


l  Multi-Level AGC audio algorithmeffectively eliminate noise, make sound pure natural

l  Low noise40μV

l  Ultra-low distortion0.008%

l  Power amplifier overall efficiency is up to 83%

l  Selectable speaker-guard power level0.6W0.8W1W1.2W

l  Within Lithium battery voltage range, maintained constant large volume

l  Support 6ohm speaker

l  Compatible with AW8736AW8737

l  Super TDD-Noise suppression

l  Excellent pop-click suppression

l  One wire pulse control

l  High PSRR-68dB217Hz

l  ESD protection±8kV (HBM)

l  Small 2mm×2mm FC-16package


Application note

Product name Type Size Download
AW8738FCR PDF 1.5M
  • Voltage(V)
    Boost Type
    R=8Ω THD=1%
    Package (mm)
  • AW8738FCR

    K-Chargepump (inductor free)
    FCQFN 2X2-16L
  • AW87329CSR

    DO-Chargepump (inductor free)
    WLCSP 2.54X2.07-18B
  • AW87318CSR

    K-Chargepump (inductor free)
    WLCSP 1.6X1.68-14B
Package form Number of pins Long(mm) Width(mm) Thick(mm) Pin spacing(mm) Heat sink Package drawing
FCQFN 2.0×2.0×0.75 -16L 16 2.0 2.0 0.75 0.4 N
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