How To Make Simple Mini Stereo Audio Amplifier Circuit- TDA2822

The TDA2822M is a Dual low-voltage power amplifier in an 8-Dip Minidip monolithic integrated circuit. It's designed to be used in portable tape players and radios as a dual audio power amplifier.

TDA2822M Symbol

TDA2822M  Footprint

TDA2822M 3D Model

TDA2822M Schematics Diagram

STMicroelectronics TDA2822M technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics TDA2822M.

• Supply Voltage: 3-15V.

• Output Power: 3.2 W.

• Audio - Load Impedance: 8 Ohms.

• Gain: 39 dB.

• Operating Supply Current: 12 mA

• Ib - Input Bias Current: 0.1 uA.

• PSRR - Power Supply Rejection Ratio: 40 dB.

• Available in 8-Pin DIP package

TDA2822M Amplifier Test Circuit in Stereo Mode

Test Circuit in Stereo Mode

The left channel input is connected to the first built-in amplifier's non-inverting input (pin 1), while the right channel is connected to the second built-in amplifier's non-inverting input (pin 16). Separate 1000uF capacitors are used to link the inverting input of these built-in amplifiers to the ground (C5 and C6). Pins 6 and 11 of the IC control the amplified outputs (left and right). Capacitors C1 and C2 are used to connect the outputs to the matching speakers. The resistor-capacitor branch connected between speakers (0.1uF and 4.7 ohm) is intended to improve high-frequency stability and prevent oscillations. C7 is the power supply filter capacitor.

TDA2822M Amplifier Test Circuit in Bridge Mode

Test Circuit in Bridge Mode

The output power of the TDA2822M amplifier can be boosted by employing the bridge configuration in mono mode, as shown in Figure 2. The audio signal is fed into the first built-in amplifier's non-inverting input. The second built-in amplifier's non-inverting input is grounded. The C9, C11 capacitor branch grounds the inverting input of these amplifiers. The R5, C8, and R6, C10 branches are intended to improve high-frequency stability and reduce oscillations. C12 is a capacitor that filters the power source.

• Audio amplifiers for radios

• Computer Audio Amplifiers

• Toys Audio Amplifiers

• Battery Operated Music Players

• Any Type of Low Power Audio Amplifier

• TDA2822M Typical Application

TDA2822M Circuit Diagram

The TDA2822M IC is used in the audio amplifier shown above. This is a mono audio amplifier circuit, but as previously stated, this IC can also be used to make a stereo amplifier circuit. With the IC, this circuit uses a few passive components. The operational voltage ranges between 3 and 15 volts DC. The 10K variable resistor will be connected to the audio input points specified in the design, which will be connected to the audio you want to amplify. A speaker with an impedance of 8 Ohms is connected between pins 1 and 3 of the IC.

For long-life performance, do not operate the IC at higher voltages than 15V, always protect the IC from short circuits, double-check the connection before applying power to the IC, do not apply more heat than the IC can handle while soldering, and make sure the IC is powered in the correct polarity or use a diode between the IC and the power supply. Always store and operate the IC at temperatures between -40 and +150 degrees Celsius.

TDA2822M Outline Dimensions

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