TDA2822M Audio Amplifier: Test Circuit, Pinout and Features | Heisener Electronics
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TDA2822M Audio Amplifier: Test Circuit, Pinout and Features

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Fecha de Publicación: 2024-08-27, STMicroelectronics

TDA2822M Introduction

The TDA2822M is a dual low-power audio amplifier integrated circuit (IC) commonly used in portable audio devices and low-power amplifier applications. It can operate with a low voltage supply, typically between 3V and 15V. The TDA2822M can drive both stereo (dual-channel) and bridge-tied load (BTL) configurations, allowing it to deliver output power up to 1W per channel in BTL mode.

TDA2822M involves amplifying audio signals by increasing their voltage and power levels to drive speakers or headphones. It achieves this through two internal amplifiers that can operate independently or be bridged together for higher output power. 

TDA2822M Pinout

OUT(1): Output for channel 1.

VCC: Supply voltage (3V-15V).

OUT(2): Output for channel 2.

GND: Ground connection.

IN-(2): Inverting input for channel 2.

IN+(2): Non-inverting input for channel 2.

IN+(1): Non-inverting input for channel 1.

IN-(1): Inverting input for channel 1.

TDA2822M Symbol

TDA2822M Footprint

TDA2822M 3D Model

TDA2822M Schematic Diagram

TDA2822M Test Circuit

TDA2822M Specification

Parameter Value
Supply Voltage (VCC) 3V to 15V
Output Power 1W per channel (typical, with 6V VCC)
Output Type 1-Channel (Mono) or 2-Channel (Stereo)
Max Output Power x Channels @ Load 2W x 1 @ 16Ohm; 1W x 2 @ 8Ohm
Voltage - Supply 1.8V ~ 15V
Quiescent Current 4 mA
Input Resistance 100 kΩ
Gain 39 dB
Total Harmonic Distortion (THD) 0.2% (at 1 kHz, 100 mW output)
Frequency Response 20 Hz to 20 kHz
Channel Separation 50 dB
Operating Temperature -40°C ~ 150°C (TJ)
Package Type 8-DIP

TDA2822M Features

Dual Amplifier

Supply Voltage down to 1.8V

Low Crossover Distorsion

Low Quiescent Current

Bridge or Stereo Configuration

High Channel Separation

Fixed Gain

Wide Frequency Response

Low Total Harmonic Distortion (THD)

TDA2822M Applications

Portable Audio Devices

Headphone Amplifiers

Miniature Audio Amplifiers

Educational Kits and DIY Projects

TV and Monitor Sound Systems

Alarm and Notification Systems

TDA2822M Dimensions

TDA2822M Package

The TDA2822M is packaged in an 8-pin Dual In-line Package (8-DIP). This package type is widely used in various electronic applications due to its ease of use and compatibility with standard PCB designs. The 8-DIP package features a rectangular body with two parallel rows of four pins each, making it easy to mount on a PCB or use with breadboards for prototyping. 

FAQs

How do you connect the TDA2822M to a circuit?

The TDA2822M is typically used in a bridge configuration or stereo configuration. The pinout includes two outputs, two inputs, a supply voltage pin, a ground pin, and two feedback connections.

Does the TDA2822M have built-in protection features?

Yes, the TDA2822M includes short-circuit protection and thermal shutdown to prevent damage under abnormal operating conditions.

How does the thermal shutdown feature of the TDA2822M work?

The thermal shutdown feature automatically disables the output stages if the internal temperature exceeds a certain threshold, protecting the IC from overheating. Once the temperature drops to a safe level, the IC resumes normal operation.

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