TDA7233D

Overview

The TDA7233D is a monolithic Class AB audio power amplifier by STMicroelectronics, housed in an 8-pin Minidip package. It operates on a supply voltage range of 1.8V to 15V and delivers up to 1W of output power. Key electrical characteristics include a quiescent drain current of 0.4mA when muted, an input bias current of 100nA, and a closed-loop voltage gain of 39dB at 1kHz. The device features a mute attenuation of 70dB and a supply voltage rejection ratio of 45dB.

Feature Summary

• Integrated external mute or power down function for silent operation
• Low crossover distortion for high-fidelity audio reproduction
• Improved supply voltage rejection to maintain performance under varying conditions
• Low quiescent current design optimized for portable battery-powered applications

Applications

• Portable music players
• Cordless telephones
• Cellular radios

Procurement Notes

Verify the specific package variant required, as the TDA7233D designation corresponds to the SO8 surface-mount package, while the TDA7233 refers to the Minidip through-hole version. Confirm that the component status aligns with project timelines, as datasheets may indicate development or evaluation stages. Ensure compatibility with the target operating temperature range of -40°C to 150°C junction temperature.

Selection Notes

Select this component for single-channel mono audio amplification where low power consumption is critical. The wide supply voltage range supports both low-voltage portable devices and higher-voltage systems. Consider the thermal resistance limits (200°C/W for SO8) when designing heat dissipation strategies for enclosed spaces. The external mute control allows for flexible system integration without internal circuitry modifications.

Part Context

This part belongs to the TDA7233 series of audio amplifiers from STMicroelectronics. The 'D' suffix specifically identifies the SO8 surface-mount package option, distinguishing it from the standard Minidip leaded package. Both variants share identical electrical specifications and functionality within the same product family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.