Preliminary Datasheet
2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005
General Description
The AA4005 is a Class AB audio power amplifier
which can deliver 2.7W into 3鈩?speakers with 5.0V
power supply and THD+N less than 10%. It is designed
specially for Notebook PC and portable media player
applications.
The AA4005 features stereo full differential input or 2 sets
of stereo Single-Ended audio input. There are 4 different
gain settings at BTL mode - 6dB, 10dB, 15.6dB and
21.6dB, changed by setting GAIN0, GAIN1 pins.
AA4005 is available in TSSOP-20 (EDP) package.
Features
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Output Power, THD+N=10%
1.5W at BTL Mode for 8鈩?Speaker
2.3W at BTL Mode for 4鈩?Speaker
2.7W at BTL Mode for 3鈩?Speaker
Supply Voltage Range: 3.0V to 5.5V
4 Selectable Internal Fixed Gain Setups
Stereo Full Differential Input
Low Power Consumption at Shutdown Mode
100碌A Typical
Excellent Click/POP Noise Suppression
Thermal Shutdown Protection
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Applications
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Notebook PC
Portable Media Player
TSSOP-20
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Figure 1. Package Type of AA4005
Apr. 2008 Rev. 1. 0
1
BCD Semiconductor Manufacturing Limited
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