Agamem Microelectronics Inc.
PRELIMINARY
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DESCRIPTION
AA4838
AUDIO POWER AMPLIFIER
The AA4838 is a monolithic integrated circuit that provides DC volume control, and stereo
bridged audio power amplifiers capable of producing 2W into 4Ωwith less than 1.0% THD or
2.2W into 3
Ω
with less than 1.0% THD. The audio integrated circuits were designed
specifically to provide high quality audio while requiring a minimum amount of external
components. The AA4838 incorporates a DC volume control, stereo bridged audio power
amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia
monitors, portable radios, and desktop and portable computer applications. The AA4838
features an externally controlled, low-power consumption shutdown mode, and both a power
amplifier and headphone mute for maximum system flexibility and performance.
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FEATURES
• DC volume control interface.
• System beep detects.
• Stereo switchable bridged/single-ended power amplifiers
• Selectable internal/external gain or bass boost
• “Click and pop” suppression circuitry
• Thermal shutdown protection circuitry
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APPLICATIONS
• Portable and desktop computers
• Multimedia monitors
• Portable radios, PDAs, and portable TVs
©Copyright
Agamem Microelectronics Inc.
1
www.agamem.com.tw
2008/8/26
AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE
TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
AGAMEM [ AGAMEM MICROELECTRONIC INC. ]
