AA4006GTR-G1

Overview

The AA4006GTR-G1 is a Class AB stereo audio power amplifier with an integrated headphone driver, manufactured by Diodes Incorporated. It delivers up to 2.7W into 3Ω speakers at 5.0V supply voltage with THD+N less than 10%. The device operates within a supply voltage range of 4.5V to 5.5V and features four selectable internal gain setups in BTL mode (6dB, 10dB, 15.6dB, 21.6dB) via GAIN0 and GAIN1 pins, while SE mode maintains a fixed 4.1dB gain. It includes a stereo 2:1 input multiplexer for line or headphone inputs, PC beep functionality, low shutdown current (150µA typical), thermal shutdown protection, and click/pop noise suppression.

Feature Summary

• Stereo full differential or single-ended audio input capability with a 2:1 input multiplexer
• Four selectable internal fixed gain setups in BTL mode controlled by logic pins
• Integrated PC beep input that overrides other audio signals regardless of operational mode
• Low power consumption in shutdown mode with excellent click and pop noise suppression

Applications

• Notebook PC audio systems
• Portable media players
• Headphone amplification circuits
• Speaker driver applications

Procurement Notes

Verify the specific ordering suffix 'G1' indicates green package availability and confirm RoHS compliance status through official manufacturer documentation. Ensure the TSSOP-24 (EDP) package type matches your PCB footprint requirements. Cross-reference the part number against the latest datasheet revision to confirm pinout consistency and electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component when designing stereo audio paths requiring high output power from a single 5V supply rail. It is suitable for applications needing flexible gain configuration via external logic levels. Consider the thermal dissipation capabilities and required copper plane area if driving low impedance loads like 3Ω or 4Ω speakers continuously. Verify input coupling capacitor values to ensure proper high-pass filter cutoff frequencies for the chosen gain setting.

Part Context

This component belongs to the AA4006 series of audio power amplifiers produced by Diodes Incorporated. It is specifically engineered for portable electronics where space and power efficiency are critical constraints. The device integrates both speaker and headphone driving capabilities into a single chip, simplifying system architecture for notebook PCs and similar multimedia devices.

Replacement Considerations

AA4006GTR-E1

FAQ

How does the HP_SENSE pin determine the operating mode?

Holding the HP_SENSE pin low sets the device to BTL mode for speaker outputs, while holding it high switches the device to SE mode for headphone outputs.

What happens when a signal is applied to the BEEP_IN pin?

Applying a valid beep signal forces the amplifier into BTL mode with a fixed gain of 0.3V/V, masking all other audio inputs until the signal is removed.