TDA2616 or TDA1521 audio power amplifier module

TDA2616 TDA1521 audio power amplifier module

TDA2616 or TDA1521 audio power amplifier module with Bluetooth. This is a desktop HiFi speaker power amplifier board that can drive speakers below 6.5 inches. It can use TDA2616 or TDA1521 chips and can choose between OTL and OCL connection methods based on the secondary voltage output of your transformer. The effect is excellent.

Tda2616 Tda1521 Audio Power Amplifier Module Pcb 3D


About IC TDA2616 TDA2616q

The IC TDA2616 is a stereo audio amplifier integrated circuit that is commonly used in audio amplification applications. It is designed to deliver high-quality sound output with low distortion and noise levels. The IC has a maximum output power of 2 × 12 watts, making it suitable for a range of audio devices such as radios, TVs, and small stereo systems. It operates on a single power supply voltage of 9 to 15 volts, making it easy to integrate into various electronic circuits. The TDA2616 features short circuit and thermal overload protection, ensuring safe and reliable operation. Its compact size and minimal external component requirements make it a popular choice for audio amplification needs.

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About IC TDa1521 TDa1521q

The IC TDa1521 is a versatile-integrated circuit commonly used in audio amplifier applications. It is known for its high-quality sound reproduction and efficient performance. This IC is designed to deliver a maximum output power of 2 × 24 Watts, making it suitable for various audio systems such as stereo amplifiers, portable speakers, and car audio systems. The TDa1521 features a built-in thermal protection mechanism that prevents overheating and ensures the longevity of the device. Its low distortion and noise levels make it an ideal choice for amplifying audio signals with clarity and precision. Overall, the IC TDa1521 is a reliable and cost-effective solution for audio amplification needs.

Schematic TDA2616 or TDA1521 audio power amplifier module

Schematic Tda2616 Tda1521 Audio Power Amplifier Module
Schematic Tda2616 Tda1521 Audio Power Amplifier Module

About the circuit

  • Power Supply amplifier: AC dual 9V — 12V or AC single 12 — 21V
  • Power Bluetooth module: Single AC 6 — 12V
  • TDA1512Q max power: 2x 15W
  • TDA2616 max power: 2x 12W

In the P4 connector (Bluetooth/AUX), connect a switch to turn on and off the Bluetooth module, switching between Bluetooth audio and auxiliary input. H1 is the audio input connector (AUX IN).


About DIY Bluetooth 4.0 Audio Receiver

The Bluetooth Audio Receiver V1.3 is an electronic module created to allow the playback of various music and sounds received via Bluetooth 4.0 from a smartphone, for example, in a wide range of sound systems. For greater convenience, it features a simplified connection structure, with the pins including 5V, GND, L, R, MUTE, and LED, which have already soldered pins, eliminating the need for soldering in these locations.

The connection is simple: just provide 5V DC to the “5V” pin, connect the GND pin to the negative side of the power source (remembering that the module’s GND will be common to the speaker and the LED), connect the speakers or amplifier to the “R,” “L,” and “GND” pins (remember to use the accompanying capacitors in series with the L and R pins), and connect the resistor and LED that come with it to the “LED” pin (the LED flashes when active and stays on continuously when the smartphone is paired).

Diy Bluetooth 4.0 Audio Receiver 1.3
Diy Bluetooth 4.0 Audio Receiver 1.3

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Bom TDA2616 or TDA1521 audio power amplifier module

10KPR_LED1Brown, black, orange, gold1
8.2R/1WR1,R2Gray, red, gold, gold2
100RR3Brown, black, yellow, gold1
47RR4Yellow, violet, black, gold1
GBJ2510 or equivalentD15A 600V KBJ Bridge Rectifiers1
1N4148D2Switching Diode1
DB107SD31A 1kV DBS Bridge Rectifiers1
LM7805U2TO-220-3Positive 5V voltage regulator1
Bluetooth moduleH2DIY Bluetooth 4.0 Audio Receiver1
Power LEDLED1LED 3 mm Red1
Bluetooth LEDLED2LED 3 mm Red1
6800uF/25vC1,C2Electrolytic capacitor2
100uF/25VC3,C4Electrolytic capacitor2
100nC15,C17,C5Ceramic capacitor3
0.47uf (474)C6,C7Film capacitor2
100uF/25VC8Electrolytic capacitor1
220nC10,C11Film capacitor2
100uF/16vC12Electrolytic capacitor1
680uF/25VC13,C14Electrolytic capacitor2
680uF/16VC16Electrolytic capacitor1
5.08-02PCN1Terminal Blocks – Wire to Board P=5.08mm1
5.08-02PCN2Terminal Blocks – Wire to Board P=5.08mm1
RoutP1Terminal Blocks – Wire to Board P=5.08mm1
LoutP2Terminal Blocks – Wire to Board P=5.08mm1
AC 6-15VP3Terminal Blocks – Wire to Board P=5.08mm1
AUX INH1Connector 3 Ways 2.54 mm1
G5V-2-H1K1Signal Relays Onrom G5V-2-H1 DC5 or equivalent1
P4Bluetooth/AUXConnector 2 Ways 2.54 mm1
P5Bluetooth LedConnector 2 Ways 2.54 mm (optional)1
P6Power LedConnector 2 Ways 2.54 mm (optional)1
33UHL10805 – SMD inductor1

Download files, links, and notes

Tda2616 Tda1521 Audio Power Amplifier Module Pcb
Tda2616 Tda1521 Audio Power Amplifier Module Pcb

Download PCB in Gerber, PDF, PNG, SVG



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About the author blog author. Electronics technician for the technical school of Brasilia - Brazil. Interested in electronics, circuits and technology in general.

2 thoughts on “TDA2616 or TDA1521 audio power amplifier module”

    • Thank you for your kind words, Mircea! We are thrilled to hear that you find our website challenging and engaging for electronics technicians and hobbyists like yourself. We strive to create valuable content that caters to the interests and needs of our audience. If you have any specific questions or topics you would like us to cover, please feel free to let us know. We are here to support and provide information to the electronics community.


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