TDA2822 - Monolithic Integrated Audio Amplifier

Overview

The UTC TDA2822 is a monolithic integrated audio amplifier housed in an 8-pin plastic dual in-line package (DIP). Designed for portable audio applications, this IC offers a compact and efficient solution for low-power audio amplification. Its versatility allows it to be configured in both bridge and stereo modes, making it suitable for a variety of audio applications. The TDA2822 is known for its low power consumption, minimal crossover distortion, and wide operating voltage range, making it ideal for battery-powered devices.

Features

• Wide Operating Supply Voltage: Operates within a range of 1.8V to 12V, making it suitable for both low-voltage and standard power applications.
• Low Crossover Distortion: Ensures high-quality audio output with minimal distortion.
• Low Quiescent Circuit Current: Enhances power efficiency, extending battery life in portable devices.
• Bridge/Stereo Configuration: Can be configured for bridge (mono) or stereo output, providing flexibility in design.
• Compact Design: The 8-pin DIP package is space-efficient, ideal for compact electronic devices.
• High Output Power: Capable of delivering sufficient power for small speakers and headphones.

Applications

The TDA2822 is widely used in various audio applications due to its versatility and efficiency. Some common applications include:

• Portable Audio Devices: Such as MP3 players, portable radios, and handheld gaming consoles.
• Headphone Amplifiers: Provides clear and distortion-free audio output for headphones.
• Intercom Systems: Used in small intercom and public address systems.
• Battery-Powered Devices: Ideal for applications where power efficiency is critical, such as in toys and portable speakers.
• DIY Audio Projects: Popular among hobbyists for building custom audio amplifiers.

Electrical Characteristics

The following table summarizes the key electrical characteristics of the TDA2822 under typical operating conditions (unless otherwise specified):

Absolute Maximum Ratings

• Supply Voltage (VCC): 12V
• Output Peak Current: 1A
• Power Dissipation (Pd): 1W
• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage (VCC): 1.8V to 12V
• Load Resistance (RL): 4Ω to 32Ω (stereo), 8Ω to 64Ω (bridge)
• Quiescent Current (Iq): Typically 6mA at VCC = 3V

Performance Characteristics

• Output Power: 1W per channel (stereo mode, VCC = 6V, RL = 4Ω, THD = 10%)
• Total Harmonic Distortion (THD): <0.2% (typical at 1kHz, 250mW output)
• Frequency Response: 20Hz to 20kHz (±3dB)
• Input Sensitivity: 100mV (typical for full output power)

Package Information

The TDA2822 is available in an 8-pin plastic dual in-line package (DIP). The package dimensions and pin configuration are as follows:

Package Dimensions

• Package Type: 8-Pin DIP
• Length: 9.81mm (max)
• Width: 6.35mm (max)
• Height: 4.44mm (max)
• Lead Pitch: 2.54mm

Pin Configuration

• Pin 1: Output 1 (Amplifier 1 Output)
• Pin 2: VCC (Supply Voltage)
• Pin 3: Output 2 (Amplifier 2 Output)
• Pin 4: GND (Ground)
• Pin 5: Input 2 (Amplifier 2 Inverting Input)
• Pin 6: Input 2 (Amplifier 2 Non-Inverting Input)
• Pin 7: Input 1 (Amplifier 1 Non-Inverting Input)
• Pin 8: Input 1 (Amplifier 1 Inverting Input)

Conclusion

The TDA2822 is a highly versatile and efficient audio amplifier IC, suitable for a wide range of low-power audio applications. Its compact size, low power consumption, and flexible configuration options make it an excellent choice for portable and battery-powered devices. Whether used in stereo or bridge mode, the TDA2822 delivers reliable performance with minimal distortion, ensuring high-quality audio output. Engineers and hobbyists alike can leverage its features to design robust audio systems with ease.