TDA7053AT/N2,118

Overview

The TDA7053AT/N2,118 is a stereo BTL audio output amplifier manufactured by NXP USA Inc. It integrates two DC volume control stages and operates within a supply voltage range of 4.5 V to 18 V. The device delivers an output power of 0.55 W into a 16 Ω load at 6 V. Key electrical characteristics include a fixed voltage gain of 40.5 dB and a total quiescent current of 25 mA. It features built-in thermal protection, short-circuit proofing, and ESD protection on all pins.

Feature Summary

• Stereo BTL architecture with integrated DC volume control stages
• Built-in Missing Current Limiter (MCL) for headphone applications
• Protection against thermal overload, short circuits, and switch-on/off clicks
• ESD protected on all pins with low HF radiation design

Applications

• TV and monitor audio output stages
• Battery-fed portable recorders
• Portable radio systems
• Single-ended headphone applications with current limiting

Procurement Notes

Verify the specific ordering suffix /N2,118 against official manufacturer documentation to confirm package type and environmental compliance status. Ensure compatibility with existing PCB footprints for the SO16 package before procurement. Cross-reference part numbers with current NXP production status as older series may have discontinued variants.

Selection Notes

Select this component for designs requiring stereo amplification with minimal external components due to integrated volume control. The BTL configuration allows for higher output power compared to conventional single-ended outputs at lower supply voltages. Consider the 16 Ω load requirement for the AT variant when designing speaker or headphone interfaces.

Part Context

This device belongs to the TDA7053A family of stereo BTL audio amplifiers. It shares functional similarities with other Philips/NXP audio ICs designed for consumer electronics. The TDA7053AT specifically denotes the surface-mount SO16 version, while the DIP16 variant is designated as TDA7053A. Both share identical electrical specifications and pinouts.

Replacement Considerations

Official substitute part numbers are not explicitly confirmed in the provided source material. Verify cross-references through NXP's official replacement guide or authorized distributor databases to ensure functional and pinout compatibility.

FAQ

How does the Missing Current Limiter (MCL) function?

The MCL circuit activates when the current difference between the output terminals of each amplifier exceeds 100 mA, allowing safe operation in single-ended headphone applications.

What is the mute mode threshold voltage?

The device switches to mute mode if the DC volume control voltage falls below 0.4 V.