In this project, I will show you a power audio amplifier circuit design using a TA7222AP IC. It requires very few external parts. This audio power amplifier circuit gives 5.8 Watt audio output to a 4 Ohms load at 12V DC supply voltage.
Components List
The following components are required to make TA7222AP Audio Amplifier Circuit.
| S.no | Components | Value | Qty |
|---|---|---|---|
| 1 | Amplifier IC (IC1) | Toshiba TA7222AP IC | 1 |
| 2 | Resistor (R1) | 27K Ohm, 1/4W | 1 |
| 3 | Resistor (R2) | 220 Ohm, 1/4W | 1 |
| 4 | Variable Resistor (RV1) | 100K Ohm | 1 |
| 5 | Polar Capacitors (C1, C2, C3, C4) | 470uF, 16V | 1, 1, 1, 1 |
| 6 | Polar Capacitor (C2) | 4.7uF, 50V | 1 |
| 7 | Non-Polar Capacitor (C6) | 100nF | 1 |
| 8 | Loud Speaker (LS1) | 4 Ohm | 1 |
| 9 | Aluminium Heat Sink | - | 1 |
| 10 | Breadboard /Veroboard | - | 1 |
| 11 | Connecting Wires | - | - |
| 12 | DC Source | 12V | 1 |
Toshiba TA7222AP Audio Amplifier Features
- Audio Muting function
- Adjustable Closed-loop gain
- Low distortion
- High ripple rejection
- Short circuit protection
- Excessive supply voltage protection
- Thermal shut-down
TA7222AP Audio Amplifier Circuit Diagram
The schematic of a 5.8 watt audio amplifier circuit using ta7222ap ic is shown below.
TA7222AP Audio Amplifier Circuit Explanation
The main component of this circuit is a TA7222AP amplifier (IC1), which has ten-pin terminals.
Vcc terminal 1 connects to the +12V power supply and GND terminals (7, 8) to the ground for powering the amplifier circuit. Here, terminal 7 is the input stage, and terminal 8 is the output stage. Ripple terminal 2, muting control terminal 3, and gain adjust terminal 6 are not required in the circuit. Input terminal 4 connects to an external audio signal input terminal through R1, C2, and VR1. Here, VR1 controls the audio input signal. Feedback terminal 5 connects to the ground through R2 and C3. C5 is connected between output terminal 9 and boot-strap terminal 10. Terminal 9 connects to the ground through C6 and also connects with a 4 Ohm speaker (LS1) through C4.
This 5.8 Watt audio amplifier circuit can be assembled on a Vero board. You must be used a suitable Aluminium Heat Sink with the amplifier IC TA7222AP.
Applications of TA7222AP Audio Amplifier Circuit
- Used in car stereos, car radios, and Hi-Fi audio setups.
- Used as an integral part of home theatre setups.
- Used as High-power megaphones and acoustic systems.
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