TDA2050 amplifier circuit diagram with a preamplifier stage using the Op Amp TL072 chip, that’s what this post all about. It is a simple audio amplifier circuit you can build without much stress. TDA2050 chip is a five (5) pins HI-FI audio amplifier chip common in most audio amplifier circuits especially the class AB circuits. Because of its high voltage (up to 50V) tolerance, it is more reliable over the other five (5) pins TDAs series like TDA2003, TDA2050, etcetera-etcetera.
The TDA2050 chip can output up to 50W audio power in a 4Ω impedance speaker. It can probably output 25W in an 8Ω speaker. With these characters, it is obvious that TDA2050 surpasses the other five pins TDAs audio amplifier chips.
Meanwhile in this design, the TDA2050 amplifier circuit diagram uses ±14V but to ensure the maximum output power, you can (on your own) use ±25 and a regulated ±14V for the Op Amp chip. Note that the input power is also a factor for best output power of the circuit.
TDA2050 Pinout and Functions
The table below shows the pins of the chip, its name, and function.
|1||Non – Inverting Input||Use for low impedance input, has mark plus (+)|
|2||Inverting Input||Inverts the input at the output. Use for high impedance input. It is marked minus (-)|
|3||Ground||Ground or 0V/-V supply of the IC. Use together with pin 5 (VCC) to power the chip|
|4||Output||Drives the output (speaker)|
|5||Supply Voltage||Input voltage (VCC) pin of the IC. Use together with pin 3 (Groun or 0V/-V) to power the IC|
Make use of any construction board of your choice to build the circuit. Also, ensure adequate heat sink system for the chip (TDA2050). However, the IC is designed with thermal and short circuit protection system. You can find more about this chip on its datasheet on your own spare time.
Below is the TDA2050 Amplifier Circuit Diagram