TDA-2050 Make High Quality Amplifier Circuit

The TDA2050 is a great sounding chip amplifier with lots of power. I’ll walk you through the amplifier design process as I build a 25 Watt stereo amplifier with the TDA2050. Before you begin, you’ll want to get an idea of how much output power you want from the amplifier.

The TDA2050 can be powered from a split supply or single supply. The amplifier’s output power will be higher with a split supply, so that’s what I’ll use here

The TDA 2050 is a monolithic integrated circuit in a Penta watt package, intended for use as an audio class-AB audio amplifier.

The article is being published in collaboration with JLCPCB. They supply high quality PCBs at a very reasonable price. They also can provide SMT circuit assembly.

We thanks to our sponsor JLCPCB https://jlcpcb.com/RTA for sponsoring us PCBs for this project circuit.

Thanks To JLCPCB.

$2 for 1-4 Layer PCBs.

Get SMT Coupons: https://jlcpcb.com/RTA

To make this wireless power transfer circuit, we might need some electronics component.

All components list have been given below –

Component List –

·       TDA – 2050

·       Resistor – 18 k*2, 680 Ω, 2.2 Ω

·       Polyester Film Capacitor – 2A 104J

·        Capacitor - 220µf/25v, 10µf/50v, 1µf/50v

·        Audio Input Cable

·        Power Source – DC 12v

·        Sound Speaker

The TDA2050 is a Hi-Fi Audio Amplifier IC from ST Microelectronics with a maximum output power of 32W. It has a high operating voltage of 50V compared to the other TDAxxxx series amplifier ICS. It commonly used in class-AB audio amplifier and can drive upto 50W music power into a 4 ohm speaker.

·        High output power (50 W music power IEC 268.3 rules)

·        High operating supply voltage (50 V)

·        Single or split supply operations

·        Very low distortion

·        Available in 5-pin TO220 package

·        Breadboard friendly

·        Supply Voltage rejection: 45dB

·        Can provide up to 50 Watts as output power

·        Voltage Gain: 80dB

·        Output: 28Watts with 4Ω speaker

·        Short-circuit protection (OUT to GND)

·        Thermal shutdown

·        Used for Audio signal Amplification

·        Suitable for high power amplification

·        Capable of operating on dual/split power supply

·        Can be used to cascade audio speakers

To make this mini power amplifier circuit, we might need some electronics component. JLCPCB has its own parts library. JLCPCB has 200k+ in stock components, 24 hours rapid SMT assembly. You can check SMT parts library here - https://jlcpcb.com/parts

The schematics of PCBs can be seen above.

To make this high quality amplifier circuit, 1^st we connect 18kΩ resistor with 1no leg of sound IC. Then we make a parallel connection between two resistors. That resistor is 680Ω and 18kΩ. Now connect, it’s parallel point with 2no leg of sound IC and other terminal of 18kΩ resistor with 4no leg of TDA-2050.

The other terminal of 680 ohm resistor is open now. Connect 10µf/50v capacitor with empty terminal of 680 ohm resistor.

Then connect 1µf/50v capacitor positive leg with 1no leg of TDA-2050 sound IC.

We utilize JLCPCB https://jlcpcb.com/RTA  to printout our PCB.

To make it in a easy way, now we connect a 220µf/25v capacitor and a polyester film capacitor with each other. Now connect this capacitor negative leg with 3no leg of sound IC and the capacitor positive leg will be empty now.

As above, we make a connection between polarity film capacitor and a polyester film capacitor, at the same way we make same connection between these two components.

This time, we connect this capacitor positive leg with 5no leg of sound IC. But at the moment, it’s negative leg will be empty, until we connect it with other components

It is the time to connect 2.2Ω resistor with our powerful amplifier circuit. We connect this resistor with 4no leg of sound IC and then connect 10µf/50v capacitor positive leg with the empty leg of 2.2Ω resistor.

Our circuit connection going to the last position. Now, we jest connect sound speaker, audio input cable and power source with the circuit.

To input audio, now we need to connect audio input cable, with the circuit. Connect audio input L/R cable with negative leg of 1µf/50v capacitor and connect audio input “G” cable with 18kΩ resistor, that is connected with 1no leg of IC .

For output audio, now we connect a sound speaker with the circuit. Connect sound speaker one terminal with 4 leg of IC and other terminal with 18kΩ resistor, that is connected with 1no leg of sound IC.

To operate this amplifier circuit, now we just connect power source with the amplifier circuit. For power source, we are using DC-12v. We connect DC-12v positive cable with 5no leg of IC and DC-12v negative cable with 3no leg of IC.

Our circuit is now completely ready for use. Now, we need to connect a heat sink with the sound IC. Then just plug in power, connect audio device with audio input cable and play music.

Thanks to JLCPCB for offering us, this SMT PCB circuit.

Neat and perfect soldering is an important part of all kind of PCBs. Since soldering, you should remember that, there should not be any kind of short circuit. After soldering all leg, we cut-off the extra leg of all electronics component.

If you complete design of your PCBs, then it is time to order PCBs. To order best quality PCBs, just visit JLCPCB and click on the “QUOTE NOW” button.

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To order PCBs, make your Gerber file. Then drag and drop the Gerber file on the following box.

Click on “Gerber Viewer” button you can check the PCBs design. Make sure everything is good, then choose color, quantity and order your PCBs at very reasonable prices.

If you are a new user, then you can order 10 pieces PCBs, costing only $2. To place your order click on “Save to Cart” button. Confirm your shipping address and shipping method.

·       To order your SMT PCBs, visit JLCPCB.

·        Drag and drop SMT PCBs file on site.

·        Choose your PCBs color and quantity.

·        To free SMT assembly for your PCB click on “SMT Assembly” button and then confirm.

·        Add your Bom file and CPL file.

·        Place your order click on “Save to Cart” button.

·        Confirm your shipping address and shipping method.

·        Pay your payment

·        Wait for confirmation mail.

·        For SMT Service, Click here - https://jlcpcb.com/smt-assembly

JLCPCB supported all shipping method can be seen below.

Estimated Delivery Time

·       DHL International Express 3-5 business days

·       UPS Worldwide Saver 3-6 business days

·       S.F Express(Standard) 5-8 business days

·       S.F Express(Economy) 8-15 business days

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To confirm your order, pay your payment. Then accept PayPal, Credit/Debit Card, Prepaid Wire Transfer. To manufactured your PCBs, it’ll takes about 2 days. DHL will be fastest shipping method to arrive your ordered PCBs at your location.

All PCBs were well packed and quality was really good.

Thanks to JLCPCB for best quality PCBs.