AA4003GTR-G1

Overview

The AA4003GTR-G1 is a Class AB stereo audio power amplifier manufactured by Diodes Incorporated. It delivers 2.0W per channel into 4Ω loads in BTL mode with THD+N less than 1%, or 160mW per channel into 16Ω loads in SE mode. The device operates on a supply voltage range of 2.7V to 5.5V and features external feedback loops for flexible gain configuration. It includes optimized click/pop noise suppression, thermal shutdown protection, and low power consumption in shutdown mode (0.7µA typical). Available in TSSOP-20(EDP) and SOIC-16 packages.

Feature Summary

• Supports switchable Single-Ended (SE) and Bridged-Tied-Load (BTL) output configurations via the HP_SENSE pin logic level.
• Integrates optimized circuits to suppress click and pop noise during power-up and power-down transitions.
• Includes thermal shutdown protection that activates when junction temperature exceeds approximately +170°C.
• Features extremely low current draw in shutdown mode, typically 0.7µA, to conserve battery life.

Applications

• Portable DVD Players
• Portable Media Players
• LCD Monitors
• Digital Photo Frames

Procurement Notes

Verify the specific package type required for your design, as the AA4003 family is available in both TSSOP-20(EDP) and SOIC-16 configurations. Confirm that the ordering suffix matches your packaging needs, such as Tape & Reel versus Tube. Ensure compatibility with RoHS compliance standards if applicable to your manufacturing requirements. Cross-reference the datasheet revision to confirm all electrical characteristics align with your system specifications before finalizing procurement.

Selection Notes

Select this component for portable applications requiring high efficiency and low quiescent current. Consider the BTL mode for higher power delivery to main speakers and SE mode for headphone outputs. Evaluate thermal dissipation requirements carefully, especially in BTL mode with low impedance loads, as heat sinking may be necessary. Ensure the supply voltage stays within the 2.7V to 5.5V range to maintain optimal performance and prevent damage.

Part Context

The AA4003 is part of Diodes Incorporated's portfolio of audio power amplifiers designed specifically for portable consumer electronics. It belongs to a product line focused on delivering high-quality audio performance while minimizing power consumption. The device is engineered to integrate easily into compact systems, offering flexibility through its dual-mode operation and external gain setting capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.

FAQ

How is the output mode (SE or BTL) determined?

The output mode is determined by the logic level applied to the HP_SENSE pin. A low level sets the chip in BTL mode, while a high level sets it in SE mode.

What is the purpose of the BYPASS pin?

The BYPASS pin connects to an internal reference voltage. Connecting a capacitor (typically 1.0µF) to ground filters internal noise, reduces harmonic distortion, and improves power supply rejection ratio.

How does the device handle thermal overload?

The AA4003 includes thermal shutdown protection. If the junction temperature exceeds approximately +170°C, the device shuts down to limit total power dissipation and prevent damage.