The TDA8932-based Audio Amplifier Board is a digital mono amplifier module that can provide 35 Watt output and uses a high-performance digital amplifier TDA8932 chip. It has high efficiency, and good sound quality, and is suitable for small DIY audio amplifier projects. The module requires a minimum of 10V and a maximum of 30V DC input and supports 4-8 ohm speakers. The module does not require any additional heatsinks. The output can be directly connected to a 35W speaker and it is important to use a power supply with a minimum of 2A current rating. The module can be used for public address systems, sound reinforcement systems, home-theatre systems, and instrument amplifiers.

 

Package Includes:

• 1 x TDA8932 Audio Amplifier Board

 

Features:

• Digital amplifier: The module uses a high-performance digital amplifier TDA8932 chip, which provides excellent sound quality and low distortion.
• Mono configuration: The module is designed in a mono configuration and provides a maximum output power of 35W in a Bridge Tied Load (BTL) configuration.
• Compact size: The PCB board size of the module is small, which makes it easy to mount in any small space-based DIY audio amplifier project.
• High efficiency: The module operates at a high efficiency of up to 90%, which means that less power is wasted, and more of it is converted into sound output.
• No additional radiator required: The module does not require any additional installation of a radiator, which makes it even more convenient for DIY audio projects.
• Easy interfacing: The module can be easily interfaced with the 35W speaker and power input pins.
• Wide range of applications: The TDA8932-based Audio Amplifier Board module can be used in various audio applications, including public address systems, sound reinforcement systems, home-theatre systems, and instrument amplifiers.
• Cost-effective solution: The module is a low-cost solution that provides high power output and good sound quality, making it an excellent choice for DIY audio projects and product development.

 

Description:

The TDA8932-based Audio Amplifier Board is a compact and highly efficient digital mono amplifier module that is widely used in various audio applications. It is a low-cost solution that provides high power output, good sound quality, and low distortion. This module is an ideal choice for DIY audio projects where space is limited, and it can also be used in product development, active speakers, and electroacoustic project implementations. The TDA8932 chip used in this module is a high-performance digital amplifier that provides a maximum output power of 35W in a Bridge Tied Load (BTL) configuration. The BTL output is designed to drive a single speaker and can provide a powerful and dynamic sound output. The amplifier is capable of driving speakers with a nominal impedance of 4-8 ohms, and 8 ohms is the optimum impedance for the best performance. The operating voltage for this amplifier module is between 10V and 30V DC, and the recommended voltage is 24V DC. The module is designed to work with a current of more than 2A, and a switching power supply is recommended to ensure stable and trouble-free operation. One of the significant advantages of the TDA8932-based Audio Amplifier Board is its high efficiency. The module operates at an efficiency of up to 90%, which means that less power is wasted and more of it is converted into sound output. Additionally, the module does not require any additional installation of a radiator, which makes it even more convenient for DIY audio projects.

 

Principle of Work:

The TDA8932-based Audio Amplifier Board module works as a digital audio amplifier, which uses a Pulse Width Modulation (PWM) technique to amplify the audio signal. The module has a single-channel (mono) configuration and provides a maximum output power of 35W. The audio signal is received through the INPUT+ and INPUT- pins of the module, which is then amplified by the TDA8932 amplifier chip. The TDA8932 chip operates as a digital amplifier and uses a high-frequency PWM signal to amplify the audio signal. The PWM signal is generated by the TDA8932 chip and is used to switch the power supply voltage at a high frequency. The switching frequency is typically around 300kHz, which is much higher than the frequency of the audio signal. The output of the amplifier is then filtered to remove any high-frequency noise and to recover the original audio signal. The TDA8932 chip operates at a high efficiency of up to 90%, which means that less power is wasted, and more of it is converted into sound output. The module does not require any additional heatsinks as the TDA8932 chip is designed to operate at a low temperature. The output of the module is in the form of a Bridge Tied Load (BTL) configuration, which means that the output signal is taken across two speaker terminals. The speaker impedance should be between 4-8ohm, with 8ohm being the optimum impedance.

 

Pinout of the Board:

1. INPUT+: Positive input pin for the audio signal.
2. INPUT-: Negative input pin for the audio signal.
3. BTL OUT+: Positive output pin for the amplified audio signal.
4. BTL OUT-: Negative output pin for the amplified audio signal.
5. POWER+: Positive power input pin for the module. The recommended input voltage is between 10V to 30V DC.
6. POWER-: Negative power input pin for the module.

It's important to note that the input pins are used to connect the audio source, and the output pins are used to connect the speaker or load. The power pins are used to connect the power supply. Make sure to double-check the polarity of the power supply before connecting it to the module.

 

Applications:

1. Public address system: The module can be used in public address systems for amplifying audio signals in large halls, auditoriums, and other public spaces.
2. Sound reinforcement system: It can be used in sound reinforcement systems for enhancing the quality and clarity of audio signals in live concerts, DJ events, and other musical performances.
3. Home theatre system: The module can be used in home theatre systems to provide high-quality audio output to enhance the overall entertainment experience.
4. Instrument amplifier: It can be used as an instrument amplifier for musical instruments like guitar, keyboard, and other similar instruments.
5. DIY audio amplifier projects: Due to its small size, the module is also suitable for DIY audio amplifier projects where space is a constraint.

 

Circuit:

1. Connect the positive terminal of your audio source to the INPUT+ pin of the amplifier board.
2. Connect the negative terminal of your audio source to the INPUT- pin of the amplifier board.
3. Connect the positive terminal of your speaker to the BTL OUT+ pin of the amplifier board.
4. Connect the negative terminal of your speaker to the BTL OUT- pin of the amplifier board.
5. Connect the positive terminal of your power supply to the POWER+ pin of the amplifier board.
6. Connect the negative terminal of your power supply to the POWER- pin of the amplifier board.
7. Turn on the power supply and adjust the volume of your audio source to control the audio output from the speaker.

It is important to note that you should choose a power supply with a voltage rating between 10V and 30V DC and a minimum current rating of 2A for the best performance of the amplifier module. Additionally, make sure to use a speaker with an impedance of 4-8ohm for optimum performance.

 

Library: 

 No Library is needed.

 

Code:

 No code is needed.

 

Technical Details: 

• Amplifier chip: TDA8932
• Output power: 35W
• Configuration: Mono BTL output
• Input voltage: DC 10V-30V (Recommended 24V)
• Current requirement: More than 2A
• Speaker impedance: 4-8ohm (8 ohms optimum)
• PCB board size: 45 × 31 MM
• Cooling: No heatsink required
• Interfacing: Easy interfacing with 35W speaker and power input pins
• Alternative amplifier chips: TDA7279 (15W + 15W), TPA3118 (60W)

 

Resources:

• Datasheet
• Video

                    

Comparisons:

Both the TDA8932-based Audio Amplifier Board module and the Audio Amplifier Module Board 100W Class AB 32V Mono Power Amplifier TDA7293 are audio amplifier boards that can be used for various audio applications. However, they have some key differences in terms of power output, circuit configuration, and other features. Here's a comparison between the two:

1. Power Output: The TDA8932-based Audio Amplifier Board module provides a maximum power output of 35 watts, while the Audio Amplifier Module Board 100W Class AB 32V Mono Power Amplifier TDA7293 provides a maximum power output of 100 watts.
2. Circuit Configuration: The TDA8932-based Audio Amplifier Board module has a mono BTL (Bridge-Tied Load) output, while the Audio Amplifier Module Board 100W Class AB 32V Mono Power Amplifier TDA7293 has a Class AB amplifier circuit.
3. Input Voltage: The TDA8932-based Audio Amplifier Board module requires an input voltage of 10V to 30V DC, while the Audio Amplifier Module Board 100W Class AB 32V Mono Power Amplifier TDA7293 requires an input voltage of 32V DC.
4. Speaker Impedance: The TDA8932-based Audio Amplifier Board module supports a speaker impedance of 4-8 ohms, while the Audio Amplifier Module Board 100W Class AB 32V Mono Power Amplifier TDA7293 supports a speaker impedance of 4-8 ohms.
5. PCB Size: The TDA8932-based Audio Amplifier Board module has a PCB board size of 45 × 31 MM, while the Audio Amplifier Module Board 100W Class AB 32V Mono Power Amplifier TDA7293 has a PCB board size of 65 × 45 MM.