AA4005

www.DataSheet4U.com 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 3Ω 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 · Output Power, THD+N=10% 1.5W at BTL Mode for 8Ω Speaker 2.3W at BTL Mode for 4Ω Speaker 2.7W at BTL Mode for 3Ω 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 100µA Typical Excellent Click/POP Noise Suppression Thermal Shutdown Protection · · · · · · Applications · · Notebook PC Portable Media Player TSSOP-20 （EDP） Figure 1. Package Type of AA4005 Apr. 2008 Rev. 1. 0 1 BCD Semiconductor Manufacturing Limited www.DataSheet4U.com Preliminary Datasheet 2.7W Stereo Audio Power Amplifier with Shutdown, 4 Selectable Gain Setups AA4005 Pin Configuration G Package (TSSOP-20(EDP)) GND GAIN0 GAIN1 OUTL+ LINPVDD RIN+ OUTLLIN+ BYPASS 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 GND SHUTDOWN OUTR+ RINVDD PVDD OUTRGND NC GND Figure 2. Pin Conf...