TDA2040 Pinout, Equivalent, Application, Datasheet

The TDA2040 comes in a 5-pin Pentawatt package and is widely used in high-quality audio systems, delivering clean sound and low harmonic distortion for home audio, studio monitors, DIY speaker projects, and precision amplifier modules. Before getting into the detailed sections, it’s important to understand the TDA2040 pinout, as proper wiring ensures stable performance and prevents distortion or overheating in Hi-Fi audio amplifier designs.

tda2040 datasheet pinout equivalent specification application — TDA2040 Amplifier Datasheet and Specs

Introduction

The TDA2040 is a high-performance class-AB audio power amplifier IC capable of delivering up to 25W of output power with excellent sound quality. Designed for low total harmonic distortion and high-fidelity audio reproduction, it is suitable for professional audio equipment, home stereo systems, and active speaker designs. With high supply voltage capability and robust protection features, the TDA2040 ensures reliable long-term operation.

tda2040 pinout datasheet equivalent specification pin configuration — TDA2040 Pin Configuration Diagram Pinout

Pin Configuration of TDA2040 Power Amplifier IC

The TDA2040 pinout consists of five pins arranged in a Pentawatt package. The metal tab is internally connected to VCC− for efficient heat dissipation.

Pin#	Pin Name
1	Non-Inverting Input (+)
2	Inverting Input (-)
3	V- (Negative Supply)
4	Output
5	V+ (Positive Supply)

TDA2040 Pin Configuration Table

Note: DATASHEET DOWNLOAD button is provided end of this article.

TDA2040 Key Features

High-fidelity, low-distortion audio output
Stable class-AB operation
Built-in thermal shutdown
Overload and short-circuit protection
Compatible with dual-supply audio systems
Wide frequency response for Hi-Fi reproduction
Ideal for both standalone and multi-channel amplifiers

TDA2040 Specifications/Characteristics

Supply Voltage (Vs): ±20V
Output Power: up to 25W with proper heatsinking
Total Power Dissipation (Ptot): 25W
Storage Temperature (Tstg): −40°C to +150°C
Operating Class: Class-AB audio amplifier
Package: 5-Pin Pentawatt
Pin Configuration: 1-Non-Inv. Input, 2-Inv. Input, 3-VCC−, 4-Output, 5-VCC+

Key Applications of TDA2040 Power Amplifier IC

Hi-Fi stereo amplifier systems
Active speaker and subwoofer modules
Home theatre audio circuits
Audio driver stages for mixers and pre-amps
DIY high-quality audio amplifier projects
Low-distortion guitar and musical instrument amplifiers
Two-way and three-way active crossover amplifiers

TDA2040 Equivalent ICs / Alternatives

(Verify compatibility before using replacements)

TDA2030 (lower power)
TDA2050 (higher power alternative)
LM1875 (similar performance)
TDA2003 (general-purpose audio)
TDA1554Q (car audio multi-channel option)

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Working Principle of TDA2040

The TDA2040 operates as a class-AB amplifier using an internal differential input stage and a high-current push-pull output section. This provides excellent linearity and minimizes crossover distortion. When a low-level audio signal enters the input pins, it is amplified with precision and delivered to the load (speaker) with significant power. The IC maintains stability across varying temperatures and load conditions thanks to its integrated thermal and overload protections.

Frequently Asked Questions (FAQ)

Q1: What is the TDA2040 pinout?
It includes Inverting Input, Non-Inverting Input, VCC−, Output, and VCC+ pins.

Q2: How much output power can TDA2040 provide?
Up to 25W with proper heatsink and supply design.

Q3: Does the TDA2040 require a heatsink?
Yes. For safe and full-power operation, proper heatsinking is essential.

Q4: Can TDA2040 work with a single power supply?
It is designed for dual-supply (±) operation, but single-supply configurations are also possible with proper biasing.

Conclusion

The TDA2040 is a reliable 25-watt Hi-Fi class-AB audio amplifier IC ideal for high-quality sound systems, home audio setups, and DIY amplifier projects. Its clean output, strong protection features, and simple pinout make it a popular choice for engineers and hobbyists. By understanding the TDA2040 pinout and applying proper heatsinking and circuit design, you can achieve professional-grade audio performance with minimal distortion.

Datasheet of TDA2040 Power Amplifier IC

Click the following Button below to download the datasheet of TDA2040 :

Download Datasheet

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