TDA series ICs are very popular amplifier ICs produced by SGS-THOMSON & Philips. So the most commonly used TDA ICs are TDA2003 and TDA2030 for little audio amplifiers kits whereas TDA7294 IC is used for high power amplifiers. So these integrated circuits are well known because of their super quiet and high-fidelity sound operations. This TDA2020 amplifier chip is used to amplify and supply power to speakers. If this chip is connected with suitable external components then there will be no external noise or humming. Thus, this article discusses an overview of the TDA2050 IC, pinout, specifications, and its applications.
What is TDA2050 IC?
The TDA2050 IC is a Hi-Fi audio amplifier from ST Microelectronics. This IC output ranges from 5A to 32W and its high operating voltage is 50V as compared to the other amplifier ICs from the TDA series. So these ICs are used in class-AB audio amplifier which drives a 4 ohm speaker by supplying up to 50W power.
This amplifier IC outputs up to 5Amps current to drive any speaker without damage. This general-purpose amplifier IC is used in mono or stereo audio design circuits. Thus this amplifier IC operating voltage is ±25V which allows operating in both dual and single supply voltages which makes it strong enough to be utilized in automotive audio designs.
Working
The TDA2050 monolithic IC works as an audio-class AB amplifier. So this IC is a 5-pin-based amplifier chip where pin-3 and pin-5 are utilized to power the IC. So the audio signal that needs to be amplified can be given through the non-inverting input (pin-1) so that amplified audio output can be attained throughout pin-4.
The TDA2050 IC provides up to 35 Watts of true RMS power to drive a 4-ohm load. It has a 0.05% typical harmonic & crossover distortion. Thus this amplifier IC includes a circuit that restricts the output transistor current by decreasing the possibility of harm throughout a short circuit.
TDA2050 IC Pin Configuration:
The pin configuration of the TDA2050 IC is shown below. This IC includes 5 pins and each pin and its functionality are discussed below.
TDA2050 IC Pin Configuration
- Pin-1 (Non–Inverting Input): It is a noninverting pin of the amplifier IC.
- Pin-2 (Inverting Input): It is an inverting pin (-) of the amplifier IC.
- Pin-3 (GND): It is a ground pin which connects to the ground terminal of the circuit
- Pin-4 (Output): It is an output pin that provides the amplified signal
- Pin-5 (Voltage Supply): It is a voltage supply pin where the supply voltage ranges from 6V to 36V.
Features & Specifications:
The features and specifications of TDA2050 IC include the following.
- TDA2050 IC is a monolithic Hi-Fi audio amplifier IC.
- It is available in a 5-pin TO220 package.
- This is a low-frequency-based class AB amplifier.
- Its maximum output power is 50 Watts.
- Its maximum operating voltage is 50V.
- This IC operates with single (or) split supply operations.
- It has very little distortion.
- This IC has short-circuit and thermal shutdown protection.
- Its voltage gain is 80.
- Its voltage supply rejection is 45dB.
Equivalent & Other Amplifier ICs
Equivalent TDA2050 IC is TDA2030 whereas other audio amplifier ICs are; TDA1554, LM386, TDA2030, TDA7265, TDA7294, TDA2005 & TDA7279.
35W to 75W Stereo Audio Amplifier Circuit with TDA2050 IC
35W to 75W stereo audio amplifier circuit with TDA2050 IC is shown below. A stereo amplifier is generally used to design a hi-fi system. So this amplifier plays a major role in these systems to change the signals from different sources to provide rich sound. Generally, TDA2050 IC is used to design class AB audio amplifiers by combining both the class A & B amplifiers. So these amplifiers are mainly designed to overcome and eliminate the drawbacks of less efficiency within class-A amplifiers as well as distortion within class-B amplifiers by simply combining the advantages of both types of amplifiers.
The required components to make a 35W to 75W stereo audio amplifier circuit with TDA2050 IC mainly include; TDA2050 IC, 47K,1ohm resistors,1uf, 0.I5uf, 22uf, and 0.1uf capacitors, and 8-ohm speaker. Connect this circuit as per the diagram shown below.
35W to 75W Stereo Audio Amplifier Circuit
Working
This stereo audio amplifier circuit works by providing an audio input signal at pin-1 of the IC. Here the positive voltage is supplied to pin-5 whereas negative voltage is provided to pin-3 thus output is received from pin-4, wherever the speaker is connected. So there is an R3 feedback resistor that gives feedback to pin 2. Whenever we provide voltage & audio input to this amplifier circuit, this circuit amplifies the input signal to provide a 35Watts rich output signal at the connected load. To get 70 watts output, two 35 watts stereo power amplifiers are combined.
This stereo audio amplifier circuit is used for audio signal amplification, used to cascade audio speakers, and also used for high-power amplification.
15Watts Audio Amplifier Circuit with TDA2050 IC
The simple 15Watts audio amplifier circuit using TDA2050 IC is shown below. This circuit delivers around 15W of output power for an 8-ohm, 18Watts speaker load through an 18V DC power supply.
So the required components to make this amplifier circuit mainly include TDA2050 IC, 22-kilo ohm, 2.2 ohm and 680-ohm resistors, 0.1uF, 1000uF, 2.2uf 35V, 100uF 35V, 22uf 35V, and 0.47 uF, CON1 and LS1 (8-ohm, 18Watts speaker), a heat sink for IC, 18V DC and audio source.
15Watts Audio Amplifier Circuit with TDA2050 IC
Connections:
Here, the TDA2050 IC is a 5-pin chip where pin-1 of this IC is a non-inverting input and is connected through R2 & R3 resistors to the ground. The inverting input pin like pin-2 of this IC is connected to the GND terminal through a R4 resistor & C5 capacitor network. This IC pin-3 is connected directly to GND.
The output pin of this IC like Pin 4 is connected by an 8-ohm speaker through C6 which is also connected to GND through R6 resistor and C7 capacitor in series. Here pin 5 is simply connected to 18V Pin 4 is the power supply.
Working
Once the circuit assembling is done on the PCB then enclose it within a suitable box. Connect CON1 on the power supply front panel. This circuit working is very simple. Connect the 18Volts power supply and the 8-ohm, 18Watts speaker across LS1 to this circuit. Thus, connect audio input first from the audio source like a cell phone or laptop across the CON2 connector. By using a metal screwdriver, touch C3 gently then you will hear a humming sound coming from the speaker. Now the amplifier is working properly & ready to utilize. So finally, you will listen to the amplified audio signal through the LS1 speaker.
Advantages & Disadvantages
The advantages of TDA2050 ICs include the following.
- The TDA2050 monolithic integrated circuit has short-circuited protection which reduces the damage risk from over-current.
- This IC has very low distortion.
- This IC has a maximum 32W output power which drives up to 50W of music power to drive a 4Ω speaker.
- This IC operates in both split and single supply modes.
- It is breadboard-friendly.
- This IC has very little distortion.
- It provides high o/p power.
- Its operating voltage supply is high like 50V.
The disadvantages of TDA2050 IC include the following.
- TDA2050 ICs power rating is limited.
- These integrated circuits are delicate and fragile.
- These cannot work at higher voltages.
- It is significant to check its counterpart while using TDA2050 ICs because they have been a trouble for several years..
- It needs a heat sink to dissipate power.
Applications
The applications of TDA2050 ICs include the following.
- The TDA2050 IC can be used as a class-AB audio amplifier to provide up to 35W of power to drive a 4-ohm load.
- This IC is used in high-end TV sets due to its low harmonic & crossover distortion, high power & higher operating voltage supply.
- This IC can be used for audio signals and high-power amplification.
- It can be utilized to cascade audio speakers.
- This amplifier IC is used in mono or stereo audio design circuits.
- It is a versatile chip, used widely in different audio applications because of its effectiveness and simplicity.
Please refer to this link for the TDA2050 IC Datasheet.
Thus, this is an overview of the TDA2050 IC, pinout, features, specifications, circuit, working, and applications. This is a monolithic integrated circuit used as an audio-class AB amplifier. This IC provides many benefits like; less distortion, high power, versatility, high operating voltage supply, and protection from over temperature. Here is a question for you, what is TDA2030 IC?