AA4005GTR-G1

Overview

The AA4005GTR-G1 is a Class AB stereo audio power amplifier designed for portable applications. It delivers up to 2.7W into a 3Ω load at 5.0V with THD+N under 10%. The device operates on a supply voltage range of 4.5V to 5.5V and features four selectable internal gain setups (6dB, 10dB, 15.6dB, 21.6dB) configured via GAIN0 and GAIN1 pins. It supports both stereo full differential and single-ended inputs. Key electrical characteristics include a typical shutdown current of 150µA and thermal shutdown protection.

Feature Summary

• Supports stereo full differential or single-ended audio input configurations
• Features four selectable internal fixed gain setups controlled by logic pins
• Includes excellent click/pop noise suppression for audio quality
• Provides thermal shutdown protection to prevent overheating

Applications

• Notebook PC audio systems
• Portable media player amplification

Procurement Notes

Verify the component manufacturer origin, as the datasheet identifies BCD Semiconductor Manufacturing Limited while the model suffix indicates Diodes Incorporated distribution. Confirm RoHS compliance status associated with the specific ordering suffix. Ensure the TSSOP-20(EDP) package type matches the target PCB footprint requirements before procurement.

Selection Notes

Select this amplifier for low-voltage portable designs requiring high output power relative to supply constraints. The availability of multiple gain settings allows flexibility in system design without external resistors. Verify that the required speaker impedance aligns with the specified power delivery ratings to ensure optimal performance and reliability within the operating temperature range.

Part Context

This component belongs to the AA4005 series of stereo audio power amplifiers. It is manufactured using BCD technology and distributed under the Diodes Incorporated brand. The part is housed in a TSSOP-20 package with an exposed pad for improved thermal dissipation. It is specifically engineered for battery-powered consumer electronics where efficiency and audio fidelity are critical.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.