The HAA9007 is a high efficiency filter-less Class-G audio power amplifier with Automatic Gain Control technology and an adaptive high efficiency charge pump boost power supply.
The device constantly monitors output power and dynamically adjust internal gain to prevent long time overstress across the speaker.
The adaptive charge pump structure activates automatically depending on the output signal. It generates 6V supply for output stage of amplifier when the peak output voltage is high.
It can deliver 1W (THD+N=1%) of continuous average power to an 8Ω load by a lithium/Ion battery. The HAA9007 features high efficiency up to 81%, which helps extend battery life when playing audio.
The AGC features multi-level constant output power, which can Improve sound quality and suppress the clipping noise. It also helps designer to select suitable output power which match the speaker.
The HAA9007 has a 48μVrms low output noise at gain=8V/V to improve the signal to noise ratio (SNR).
The HAA9007 is available in small 1.57mmX1.61mm 14-bal WLCSP package with 400μm pitch
HAA9007 Features:
Built-In AGC technology
4 Constant Output Power levels Control:
1.2W ,1W ,0.8W ,0.6W@8Ω
Adaptive Charge Pump Power Supply
Low Output Noise : 48μVrms @ gain=8V/V
Built-in Class AB Receiver mode
SNR:98dB (3.8V,8Ω)
High Efficiency : 81%
Low quiescent current: 3.8mA (3.8V)
2.18W Output Power (8Ω @ 4.2V, THD+N=10%)
THD+N:0.006%@1kHz,800mW,8Ω Load,3.8V Supply
Thermal and Short-Circuit Protection with Auto Recovery
Built-in Pop-and-click noise suppression
Low RF Susceptibility
Available in 1.57mmX1.61mm 14-ball WLCSP Package
HAA9007 Applications:
Mobile Phones and Tablets
Portable Media Players
HAA9007 Simplified Application Diagram:
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