TDA7053A/N2,112

Overview

The TDA7053AT/N2,112 is a stereo BTL audio output amplifier manufactured by NXP USA Inc. It features integrated DC volume control stages and operates within a supply voltage range of 4.5V to 18V. The device delivers an output power of 0.55W per channel into a 16-ohm load at 6V supply. It includes built-in thermal protection, short-circuit proofing, and mute functionality. The component is housed in a 16-SO plastic small outline package.

Feature Summary

• Integrated DC volume control stages eliminate the need for external coupling capacitors
• BTL architecture reduces peak supply current and allows operation with smaller power supply capacitors
• Built-in Missing Current Limiter (MCL) protects against excessive output current differences
• Designed to prevent switch-on and switch-off clicks while maintaining low HF radiation

Applications

• Television and monitor audio systems
• Battery-fed portable recorders
• Portable radio receivers
• Headphone applications requiring single-ended output configuration

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm RoHS compliance status and check for any specific environmental declarations required for your region. Ensure the ordering suffix matches the exact package variant needed for your PCB layout.

Selection Notes

Select this amplifier when a compact stereo solution with direct DC volume control is required without external coupling components. Consider the SO16 package dimensions and thermal resistance characteristics for your enclosure design. Verify that the load impedance and supply voltage align with the specified output power ratings.

Part Context

This component belongs to the TDA7053A family of stereo BTL audio amplifiers. The TDA7053A variant typically supports lower impedance loads like 8 ohms, while the TDA7053AT version is optimized for higher impedance loads such as 16 ohms. Both share the same functional architecture and pinout configuration.

Replacement Considerations

Official substitute part numbers include TDA7053A/N2,112 for DIP16 packaging variants. Ensure replacement parts maintain the same SO16 package profile and electrical specifications if transitioning between TDA7053A and TDA7053AT versions.

FAQ

How does the MCL protection circuit function?

The Missing Current Limiter activates when the current difference between the output terminals of each amplifier exceeds 100 mA, protecting the device during fault conditions.

What triggers the mute mode?

The device switches to mute mode when the DC volume control voltage falls below 0.4 V, effectively silencing the audio output.