TDA2822D

Overview

The TDA2822D is a monolithic integrated circuit audio amplifier manufactured by STMicroelectronics, housed in an 8-lead SOIC package. It operates as a Class-AB dual low-voltage power amplifier with a supply voltage range of 1.8 V to 15 V. The device delivers 1 W output power into a 32 Ohm load and 380 mW per channel into an 8 Ohm load. Key electrical parameters include a gain of 39 dB, total harmonic distortion plus noise of 0.2%, and an input bias current of 100 nA. It supports single-channel mono or two-channel stereo configurations with a maximum operating junction temperature of +150°C.

Feature Summary

• Supports bridge or stereo configuration for flexible audio output setups
• Operates with low quiescent current suitable for battery-powered applications
• Features low crossover distortion for improved audio fidelity

Applications

• Portable cassette players
• Radios
• CD players

Procurement Notes

Verify the specific suffix (e.g., D vs TR) against the manufacturer datasheet to confirm packaging type such as tube or reel. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the SOIC-8 footprint matches your PCB design constraints before finalizing procurement.

Selection Notes

Select this component when designing portable audio systems requiring a dual amplifier in a compact surface-mount package. It is suitable for applications needing operation from low supply voltages down to 1.8 V. Consider the thermal performance and heat dissipation requirements given the 1 W output capability in the SOIC-8 housing.

Part Context

This part belongs to the TDA2822 family of dual low-voltage power amplifiers. It is designed specifically for portable consumer electronics where space and power efficiency are critical. The device integrates two independent amplifier channels capable of driving speakers in either stereo or bridged mono mode.

Replacement Considerations

Check for direct pin-compatible alternatives within the same STMicroelectronics audio amplifier portfolio. Verify that any substitute maintains the 1.8 V minimum supply voltage and similar output power characteristics for 32 Ohm loads.